Herbicidal mixture of anilofos and propanil

ABSTRACT

This invention relates to herbicidal mixtures of anilofos with propanil, or one or more of the compounds selected from azimsulfuron, metsulfuron methyl, chlorimuron ethyl, bensulfuron methyl, ethametsulfuron methyl, nicosulfuron, rimsulfuron, sulfometuron methyl, thifensulfuron methyl, tribenuron methyl, triflusulfuron methyl, methyl 2-    (4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-6-(trifluoro-methyl)-3-pyridinecarboxylate, chlorsulfuron, and hexazinone, herbicidal compositions of said mixtures, and a method for the use of said mixtures to control undesired vegetation.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a continuation-in-part application which claims the benefit of U.S. Provisional application Ser. No. 60/002,049 filed Aug. 8, 1995; U.S. Provisional application Ser. No. 60/001,448 filed Jul. 26, 1995; U.S. Provisional application Ser. No. 60/001,272 filed Jul. 20, 1995; U.S. Provisional application Ser. No. 60/000,231 filed Jun. 15, 1995; U.S. Ser. No. 08/412,396 filed Mar. 28, 1995, abandoned, which is a continuation in part of U.S. Ser. No. 08/334,720 filed Nov. 4, 1994 now abandoned.

BACKGROUND OF THE INVENTION

The present invention relates to mixtures of herbicides that have a synergistic effect on weeds and which are safe to crop plants.

The control of undesired vegetation is extremely important in achieving high crop efficiency. This can be achieved by the selective control of the growth of weeds in such useful crops as rice, soybean, sugarbeet, corn, potato, wheat, barley, alfalfa, tomato, pineapple and plantation crops such as citrus and sugarcane among others. Unchecked weed growth in such useful crops can cause significant reduction in productivity and thereby result in increased costs to the consumers. The control of undesired vegetation in noncrop areas is also important. The need for finding products that achieve such results continues to be commercially important.

German published patent application DE-4236475-A1 discloses mixtures of anilofos with other herbicides, but does not disclose the mixtures of this invention.

SUMMARY OF THE INVENTION

This invention relates to mixtures of herbicides that produce synergistic results. The herbicidal mixtures comprise herbicidally effective amounts of the compound of Formula I in admixture with herbicidally effective amounts of one or more of the compounds of Formulae IIa through IIo and agriculturally suitable salts thereof, provided that when a herbicidally effective amount of the compound of Formula IId is present in the mixture, the mixture also comprises a herbicidally effective amount of one or more compounds of Formulae IIa to IIc and IIe to IIo. This invention also relates to herbicidal compositions comprising effective amounts of the aforesaid mixtures and at least one of the following: surfactant, solid or liquid diluent. This invention also relates to a method of controlling undesired vegetation comprising applying to the locus of the undesired vegetation herbicidally effective amounts of the aforesaid mixtures.

The mixtures of the invention comprising the Formula I and Formulae IIa-o compounds are described below: ##STR1## S- 2- (4-chlorophenyl)(1-methylethyl)amino!-2-oxoethyl!O,O-dimethyl phosphorodithioate (anilofos, I); ##STR2## N- (4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!-1-methyl-4-(2-methyl-2H-tetrazol-5-yl)-1H-pyrazole-5-sulfonamide (azimsulfuron, IIa); ##STR3## Methyl 2- (4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino!carbonyl!amino!sulfonyl!benzoate (metsulfuron methyl, IIb); ##STR4## Ethyl 2- (4-chloro-6-methoxy-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!benzoate (chlorimuron ethyl, IIc); ##STR5## Methyl 2- (4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!methyl!benzoate (bensulfuron methyl, IId); ##STR6## Methyl 2- 4-ethoxy-6-(methylamino)-1,3,5-triazin-2-yl!amino!carbonyl!amino!sulfonyl!benzoate (ethametsulfuron methyl, IIe); ##STR7## 2- (4,6-dimethoxy -2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-N,N-dimethyl-3-pyridinecarboxamide (nicosulfuron, IIf); ##STR8## N- (4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!-3-(ethylsulfonyl)-2-pyridinesulfonamide (rimsulfuron, IIg); ##STR9## Methyl 2- (4,6-dimethyl-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!benzoate (sulfometuron methyl, IIh); ##STR10## Methyl 3- (4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino!carbonyl!amino!sulfonyl!-2-thiophenecarboxylate (thifensulfuron methyl, IIi); ##STR11## Methyl 2- (4-methoxy-6-methyl-1,3,5-triazin-2-yl)methylamino!carbonyl!amino!sulfonyl!benzoate (tribenuron methyl, IIj); ##STR12## Methyl 2- 4-(dimethylamino)-6-(2,2,2-trifluoroethoxy)-1,3,5-triazin-2-yl!amino!carbonyl!amino!sulfonyl!-3-methylbenzoate (triflusulfuron methyl, IIk); ##STR13## Methyl 2- (4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-6-(trifluoromethyl)-3-pyridinecarboxylate (IIl); ##STR14## 2-Chloro-N- 4-methoxy-6-methyl- 1,3,5-triazin-2-yl)amino!carbonyl!benzenesulfonamide (chlorsulfuron, IIm); ##STR15## N-(3,4-dichlorophenyl)propanamide (propanil, IIn); ##STR16## 3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione (hexazinone, IIo).

The mixtures of the invention preferred for enhanced herbicidal activity include:

a) the compound of Formula I and the compound of Formula IIa,

b) the compound of Formula I and compounds of Formulae IIa and IId,

c) the compound of Formula I and the compounds of Formulae IIb and IId,

d) the compound of Formula I and the compounds of Formulae IIb and IIc,

e) the compound of Formula I and the compound of Formula IIb,

f) the compound of Formula I and the compound of Formula IIe,

g) the compound of Formula I and the compound of Formula IIl,

h) the compound of Formula I and the compounds of Formulae IIb and IIl,

i) the compound of Formula I and the compound of Formula IIe,

j) the compound of Formula I and the compound of Formula IIf,

k) the compound of Formula I and the compound of Formula IIg,

l) the compound of Formula I and compounds of Formulae IIg and IIi,

m) the compound of Formula I and the compound of Formula IIh,

n) the compound of Formula I and the compound of Formula IIi,

o) the compound of Formula I and the compound of Formula IIj,

p) the compound of Formula I and the compound of Formula IIk,

q) the compound of Formula I and the compound of Formula IIm,

r) the compound of Formula I and the compound of Formula IIn, and

s) the compound of Formula I and the compound of Formula IIo.

The herbicidal compositions of the invention preferred for enhanced herbicidal activity include:

a) the compound of Formula I and the compound of Formula IIa,

b) the compound of Formula I and compounds of Formulae IIa and IId,

c) the compound of Formula I and the compounds of Formulae IIb and IId,

d) the compound of Formula I and the compounds of Formulae IIb and IIc,

e) the compound of Formula I and the compound of Formula IIb,

f) the compound of Formula I and the compound of Formula IIc,

g) the compound of Formula I and the compound of Formula IIl,

h) the compound of Formula I and the compounds of Formulae IIb and IIl,

i) the compound of Formula I and the compound of Formula IIe,

j) the compound of Formula I and the compound of Formula IIf,

k) the compound of Formula I and the compound of Formula IIg,

l) the compound of Formula I and compounds of Formulae IIg and IIi,

m) the compound of Formula I and the compound of Formula IIh,

n) the compound of Formula I and the compound of Formula IIi,

o) the compound of Formula I and the compound of Formula IIj,

p) the compound of Formula I and the compound of Formula IIk,

q) the compound of Formula I and the compound of Formula IIm,

r) the compound of Formula I and the compound of Formula IIn, and

s) the compound of Formula I and the compound of Formula IIo.

The mixtures of the invention most preferred for enhanced herbicidal activity include:

a) the compound of Formula I and the compound of Formula IIa,

b) the compound of Formula I and compounds of Formulae IIa and IId,

c) the compound of Formula I and the compounds of Formulae IIb and IId,

d) the compound of Formula I and the compounds of Formulae IIb and IIc,

e) the compound of Formula I and the compound of Formula IIb, and

f) the compound of Formula I and the compound of Formula IIn.

The herbicidal compositions of the invention most preferred for enhanced herbicidal activity include:

a) the compound of Formula I and the compound of Formula IIa,

b) the compound of Formula I and compounds of Formulae IIa and IId,

c) the compound of Formula I and the compounds of Formulae IIb and IId,

d) the compound of Formula I and the compounds of Formulae IIb and IIc,

e) the compound of Formula I and the compound of Formula IIb, and

f) the compound of Formula I and the compound of Formula IIn.

The preferred crops for application of the mixtures of the invention are rice, oilseed rape, barley, wheat, sugarbeet, corn, soybean, cotton, sugarcane, alfalfa, and pineapple. The mixtures are also useful for conifer release in forestry. The most preferred crops for application of mixtures of the invention are rice, oilseed rape, wheat, sugarbeet, corn, soybean and cotton.

DETAILS OF THE INVENTION

The Formula I compound can be prepared as described in U.S. Pat. No. 4,278,461. The synthesis involves the reaction of the chloroacetanilide of Formula 1 with the ammonium salt of Formula 2. ##STR17##

The Formula IIa compound can be prepared as described in U.S. Pat. No. 4,746,353. The synthesis involves the coupling of the pyrazole sulfonamide of Formula 3 with the heterocyclic carbamate of Formula 4. ##STR18##

The Formula IIb compound can be prepared as described in U.S. Pat. No. 4,383,113. The synthesis involves the reaction of the sulfonyl isocyanate of Formula 5 with the heterocyclic amine of Formula 6. ##STR19##

The Formula IIc compound can be prepared as described in U.S. Pat. No. 4,547,215. The synthesis involves the reaction of the sulfonyl isocyanate of Formula 7 with the heterocyclic amine of Formula 8. ##STR20##

The Formula IId compound can be prepared as described in U.S. Pat. No. 4,420,325. The synthesis involves the reaction of the sulfonyl isocyanate of Formula 7 with the heterocyclic amine of Formula 8. ##STR21##

The Formula IIe compound can be prepared as described in U.S. Pat. No. 4,548,638. The synthesis involves the reaction of the sulfonyl isocyanate of Formula 5 with the heterocyclic amine of Formula 11. ##STR22##

The Formula IIf compound can be prepared as described in U.S. Pat. No. 4,789,393. The synthesis involves the coupling of the pyridinesulfonamide of Formula 12 with the heterocyclic carbamate of Formula 4. ##STR23##

The Formula IIg compound can be prepared as described in U.S. Pat. No. 5,102,444 The synthesis involves the coupling of the pyridinesulfonamide of Formula 13 with the heterocyclic carbamate of Formula 4. ##STR24##

The Formula IIh compound can be prepared as described in U.S. Pat. No. 4,394,506. The synthesis involves reaction of the sulfonyl isocyanate of Formula 5 with the heterocyclic amine of Formula 14. ##STR25##

The Formula IIi compound can be prepared as described in U.S. Pat. No. 4,481,029. The synthesis involves reaction of the sulfonyl isocyanate of Formula 15 with the heterocyclic amine of Formula 6. ##STR26##

The Formula IIj compound can be prepared as described in U.S. Pat. No. 4,740,234. The synthesis involves reaction of the sulfonyl isocyanate of Formula 5 with the heterocyclic amine of Formula 16. ##STR27##

The Formula IIk compound can be prepared as described in U.S. Pat. No. 5,090,993. The synthesis involves the coupling of the N-silylsulfonamide of Formula 17 with the heterocyclic carbamate of Formula 18. ##STR28##

The Formula IIl compound can be prepared as described in WO92/15576. The synthesis involves the coupling of the pyridinesulfonamide of Formula 19 with the heterocyclic carbamate of Formula 4. ##STR29##

This reference also describes the preparation of the sodium salt of the Formula IIl compound by use of sodium methoxide.

The Formula IIm compound can be prepared as described in U.S. Pat. No. 4,127,405. The synthesis involves the reaction of the sulfonyl isocyanate of Formula 20 with the heterocyclic amine of Formula 6. ##STR30##

The Formula IIn compound can be prepared as described in U.S. Pat. No. 3,816,092. The synthesis involves reaction of 3,4-dichloroaniline with proprionyl chloride.

The Formula IIo compound can be prepared as described in U.S. Pat. No. 3,983,116. The synthesis involves reaction of the thioether of Formula 21 with dimethylamine. ##STR31##

The mixtures of the present invention can include the sulfonylureas of Formulae IIa-m as one or more of their agriculturally suitable salts. These can be prepared in a number of ways known in the art. For example, metal salts can be made by contacting a sulfonylurea of Formulae IIa-m with a solution of an alkali or alkaline earth metal salt having a sufficiently basic anion (e.g., hydroxide, alkoxide, carbonate or hydride). Quaternary amine salts can be made by similar techniques.

Salts of the sulfonylureas of Formulae IIa-m can also be prepared by exchange of one cation for another. Cationic exchange can be effected by direct contact of an aqueous solution of a salt of a sulfonylurea of Formulae IIa-m (e.g., alkali or quaternary amine salt) with a solution containing the cation to be exchanged. This method is most effective when the desired salt containing the exchanged cation is insoluble in water and can be separated by filtration.

Exchange may also be effected by passing an aqueous solution of a salt of a sulfonylurea of Formulae IIa-m (e.g., an alkali metal or quaternary amine salt) though a column packed with a cation-exchange resin containing the cation to be exchanged for that of the original salt and the desired product is eluted from the column. This method is particularly useful when the desired salt is water soluble (e.g., a potassium, sodium or calcium salt).

Formulation/Utility

The mixtures of the Formula I and Formula II compounds can be formulated in a number of ways:

(a) the Formula I and Formula II compounds can be formulated separately and applied separately or applied simultaneously in an appropriate weight ratio, e.g., as a tank mix; or

(b) the Formula I and Formula II compounds can be formulated together in the proper weight ratio.

Mixtures of the Formula I and Formula II compounds will generally be used in formulation with an agriculturally suitable carrier comprising a liquid or solid diluent and/or a surfactant wherein the formulation is consistent with the physical properties of the active ingredients, mode of application and environmental factors such as soil type, moisture and temperature. Useful formulations include liquids such as solutions (including emulsifiable concentrates), suspensions, emulsions (including micro-emulsions and/or suspoemulsions) and the like which optionally can be thickened into gels. Useful formulations further include solids such as dusts, powders, granules, pellets, tablets, films, and the like which can be water-dispersible ("wettable") or water-soluble. Active ingredients can be (micro)encapsulated and further formed into a suspension or solid formulation; alternatively the entire formulation of active ingredient can be encapsulated (or "overcoated"). Encapsulation can control or delay release of the active ingredients. Sprayable formulations can be extended in suitable media and used at spray volumes from about one to several hundred liters per hectare. High-strength compositions are primarily used as intermediates for further formulation.

The formulations will typically contain effective amounts of active ingredients, diluent and surfactant within the following approximate ranges which add up to 100 percent by weight.

    ______________________________________                                                       Weight Percent                                                                 Active                                                                         Ingredient                                                                             Diluent   Surfactant                                     ______________________________________                                         Water-Dispersible and Water-                                                                   5-90      0-94      1-15                                       soluble Granules, Tablets and                                                  Powders.                                                                       Suspensions, Emulsions,                                                                        5-50      40-95     0-15                                       Solutions (including                                                           Emulsifiable Concentrates)                                                     Dusts           1-25      70-99     0-5                                        Granules and Pellets                                                                           0.01-99     5-99.99 0-15                                       High Strength Compositions                                                                     90-99     0-10      0-2                                        ______________________________________                                    

Typical solid diluents are described in Watkins, et al., Handbook of Insecticide Dust Diluents and Carriers, 2nd Ed., Dorland Books, Caldwell, N.J. Typical liquid diluents are described in Marsden, Solvents Guide, 2nd Ed., Interscience, New York, 1950. McCutcheon's Detergents and Emulsifiers Annual, Allured Publ. Corp., Ridgewood, N.J. as well as Sisely and Wood, Encyclopedia of Surface Active Agents, Chemical Publ. Co., Inc., New York, 1964, list surfactants and recommended uses. All formulations can contain minor amounts of additives to reduce foam, caking, corrosion, microbiological growth and the like, or thickeners to increase viscosity.

Surfactants include, for example, polyethoxylated alcohols, polyethoxylated alkylphenols, polyethoxylated sorbitan fatty acid esters, dialkyl sulfosuccinates, alkyl sulfates, alkylbenzene sulfonates, organosilicones, N,N-dialkyltaurates, lignin sulfonates, naphthalene sulfonate formaldehyde condensates, polycarboxylates, and polyoxyethylene/polyoxypropylene block copolymers. Solid diluents include, for example, clays such as bentonite, montmorillinite, attapulgite and kaolin, starch, sugar, silica, talc, diatomaceous earth, urea, calcium carbonate, sodium carbonate and bicarbonate, and sodium sulfate. Liquid diluents include, for example, water, N,N-dimethylformamide, dimethyl sulfoxide, N-alkylpyrrolidone, ethylene glycol, polypropylene glycol, paraffins, alkylbenzenes, alkylnaphthalenes, oils of olive, castor, linseed, tung, sesame, corn, peanut, cotton-seed, soybean, rape-seed and coconut, fatty acid esters, ketones such as cyclohexanone, 2-heptanone, isophorone and 4-hydroxy-4-methyl-2-pentanone, and alcohols such as methanol, cyclohexanol, decanol and tetrahydrofurfuryl alcohol.

Solutions, including emulsifiable concentrates, can be prepared by simply mixing the ingredients. Chemically stabilized aqueous sulfonylurea or agriculturally suitable sulfonylurea salt dispersions are taught in U.S. Pat. No. 4,936,900. Solution formulations of sulfonylureas with improved chemical stability are taught in U.S. Pat. No. 4,599,412. Dusts and powders can be prepared by blending and, usually, grinding as in a hammer mill or fluid-energy mill. Suspensions are usually prepared by wet-milling; see, for example, U.S. Pat. No. 3,060,084. Granules and pellets can be prepared by spraying the active material upon preformed granular carriers or by agglomeration techniques. See Browning, "Agglomeration", Chemical Engineering, Dec. 4, 1967, pp 147-48, Perry's Chemical Engineer's Handbook, 4th Ed., McGraw-Hill, New York, 1963, pages 8-57 and following, and WO 91/13546. Pellets can be prepared as described in U.S. Pat. No. 4,172,714. Water-dispersible and water-soluble granules can be prepared as taught in U.S. Pat. No. 4,144,050, U.S. Pat. No. 3,920,442 and DE 3,246,493. Tablets can be prepared as taught in U.S. Pat. No. 5,180,587, U.S. Pat. No. 5,232,701 and U.S. Pat. No. 5,208,030. Films can be prepared as taught in GB 2,095,558 and U.S. Pat. No. 3,299,566.

For further information regarding formulation, see U.S. Pat. No. 3,235,361, Col. 6, line 16 through Col. 7, line 19 and Examples 10-41; U.S. Pat. No. 3,309,192, Col. 5, line 43 through Col. 7, line 62 and Examples 8, 12, 15, 39, 41, 52, 53, 58, 132, 138-140, 162-164, 166, 167 and 169-182; U.S. Pat. No. 2,891,855, Col. 3, line 66 through Col. 5, line 17 and Examples 1-4; Klingman, Weed Control as a Science, John Wiley and Sons, Inc., New York, 1961, pp81-96; and Hance et al., Weed Control Handbook, 8th Ed., Blackwell Scientific Publications, Oxford, 1989.

In the following Examples, all percentages are by weight and all formulations are prepared in conventional ways. Formula numbers refer to the formulae identified on pages 2-5.

    ______________________________________                                         Example A                                                                      High Strength Concentrate                                                      Compound of Formula I  92.9%                                                   Compound of Formula IIa                                                                               5.6%                                                    silica aerogel         0.5%                                                    synthetic amorphous fine silica                                                                        1.0%.                                                  Example B                                                                      Wettable Powder                                                                Compound of Formula I  59.6%                                                   Compound of Formula IIb                                                                               1.2%                                                    Compound of Formula IId                                                                               4.2%                                                    dodecylphenol polyethylene glycol ether                                                               2.0%                                                    sodium ligninsulfonate 4.0%                                                    sodium silicoaluminate 6.0%                                                    montmorillonite (calcined)                                                                            23.0%.                                                  Example C                                                                      Granule                                                                        Compound of Formula I  9.2%                                                    Compound of Formula IIb                                                                               0.5%                                                    Compound of Formula IIc                                                                               0.3%                                                    attapulgite granules (low volatile matter,                                                            90.0%.                                                  0.71/0.30 mm; U.S.S. No. 25-50 sieves)                                         Example D                                                                      Aqueous Suspension                                                             Compound of Formula I  22.9%                                                   Compound of Formula IIb                                                                               2.1%                                                    hydrated attapulgite   3.0%                                                    crude calcium ligninsulfonate                                                                         10.0%                                                   sodium dihydrogen phosphate                                                                           0.5%                                                    water                  61.5%.                                                  Example E                                                                      Extruded Pellet                                                                Compound of Formula I  22.9%                                                   Compound of Formula IIf                                                                               2.1%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example F                                                                      High Strength Concentrate                                                      Compound of Formula I  16.4%                                                   Compound of Formula IIn                                                                               82.1%                                                   silica aerogel         0.5%                                                    synthetic amorphous fine silica                                                                        1.0%.                                                  Example G                                                                      Granule                                                                        Compound of Formula I  9.2%                                                    Compound of Formula IIl, sodium salt                                                                  0.8%                                                    attapulgite granules (low volatile matter,                                                            90.0%.                                                  0.71/0.30 mm; U.S.S. No. 25-50 sieves)                                         Example E                                                                      Extruded Pellet                                                                Compound of Formula I  23.5%                                                   Compound of Formula IIc                                                                               1.5%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example G                                                                      Extruded Pellet                                                                Compound of Formula I  21.2%                                                   Compound of Formula IIe                                                                               3.8%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example H                                                                      Extruded Pellet                                                                Compound of Formula I  21.4%                                                   Compound of Formula IIf                                                                               3.6%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example I                                                                      Extruded Pellet                                                                Compound of Formula I  22.5%                                                   Compound of Formula IIg                                                                               2.5%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example J                                                                      Extruded Pellet                                                                Compound of Formula I  22.7%                                                   Compound of Formula IIi                                                                               2.3%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example K                                                                      Extruded Pellet                                                                Compound of Formula I  22.7%                                                   Compound of Formula IIj                                                                               2.3%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example L                                                                      Extruded Pellet                                                                Compound of Formula I  22.7%                                                   Compound of Formula IIm                                                                               2.3%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example M                                                                      Extruded Pellet                                                                Compound of Formula I  22.7%                                                   Compound of Formula IIk                                                                               2.3%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example N                                                                      Extruded Pellet                                                                Compound of Formula I  22.6%                                                   Compound of Formula IIg                                                                               1.6%                                                    Compound of Formula IIi                                                                               0.8%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example O                                                                      Extruded Pellet                                                                Compound of Formula I  22.6%                                                   Compound of Formula IIc                                                                               1.2%                                                    Compound of Formula IIf                                                                               1.2%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example P                                                                      Extruded Pellet                                                                Compound of Formula I  24.5%                                                   Compound of Formula IIh                                                                               0.5%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example Q                                                                      Extruded Pellet                                                                Compound of Formula I  22.7%                                                   Compound of Formula IIo                                                                               2.3%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example R                                                                      Extruded Pellet                                                                Compound of Formula I  24.4%                                                   Compound of Formula IIb                                                                               0.1%                                                    Compound of Formula IId                                                                               0.5%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example S                                                                      Extruded Pellet                                                                Compound of Formula I  24.6%                                                   Compound of Formula IIb                                                                               0.2%                                                    Compound of Formula IIc                                                                               0.2%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  Example T                                                                      Extruded Pellet                                                                Compound of Formula I  21.2%                                                   Compound of Formula IIa                                                                               0.7%                                                    Compound of Formula IId                                                                               3.1%                                                    anhydrous sodium sulfate                                                                              10.0%                                                   crude calcium ligninsulfonate                                                                         5.0%                                                    sodium alkylnaphthalenesulfonate                                                                      1.0%                                                    calcium/magnesium bentonite                                                                           59.0%.                                                  ______________________________________                                    

Test results indicate that mixtures of Formula I and Formula II mixtures are highly active herbicides, providing unexpected synergistic control of selected grass and broadleaf weeds. Many of the mixtures provide useful weed control when applied in sequential applications. Sequential applications of the mixtures may be particularly useful for controlling weeds that have germinated after the initial application or for improving control of larger weeds that may not be entirely controlled by a single application. In particular, sequential applications of the mixtures may be preferred in certain crop and non crop utilities. Specifically, sequential applications may be preferred in important agronomic crops which include but are not limited to sugar beet. Many of the mixtures also retain sufficient crop tolerance or even demonstrate safening on important agronomic crops, which include, but are not limited to, cotton, barley, wheat, corn (maize), alfalfa, potatoes, tomatoes, oilseed rape (including canola), sugar beets, soybeans, rice, pineapple, and sugarcane and other plantation crops. They are also useful for conifer release in forestry. The locus of application being a rice field, particularly a rice paddy, is a most preferred embodiment of this invention. Mixtures of this invention, including those with insufficient crop tolerance, have utility for enhanced broad-spectrum pre- and/or postemergence weed control in areas around fuel storage tanks, industrial storage areas, parking lots, drive-in theaters, billboards and highway and railroad structures. Alternatively, the subject mixtures are useful to modify plant growth.

The mixtures of Formula I with Formula IIa are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as rice. The mixtures of Formula I with Formula IIb are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as rice, barley and wheat. The mixtures of Formula I with Formula IIe are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as oilseed rape (including `Canola`), rice, barley and wheat. The mixtures of Formula I with Formulae IIi, IIj, IIl, and IIm are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as barley and wheat. The mixtures of Formula I with Formula IIk are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as sugar beet. The mixtures of Formula I with Formula IIf are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as corn (maize), soybean and cotton containing at least one gene conferring resistance to inhibitors of acetolactate synthase. The mixtures of Formula I with Formula IIg alone or in combination with Formula IIi are particularly valued, because they retain acceptable levels of crop selectivity in certain major agronomic crops such as corn (maize) and cotton containing a least one gene conferring resistance to inhibitors of acetolactate synthase.

Lines, varieties and cultivars of corn (maize), soybean and cotton containing at least one gene conferring resistance to inhibitors of acetolactate synthase are commercially available (e.g., corn cult. `P3180IR`, soybean cult. `W20`) or can be produced by methods described in U.S. Pat. Nos. 4,761,373, 5,013,659, 5,084,082, 5,084,086 and 5,159,135, and Sebastian et al., Crop Sci., 1989, 29, 1403-1408.

In the context of this disclosure, a "line" is a group of plants of similar parentage that display little or no genetic variation between individuals for at least one trait. Such lines may be created by one or more generations of self-pollination and selection, or by vegetative propagation from a single parent, such as by tissue or cell culture techniques. A "variety" or "cultivar" refers to an agronomically superior line that has been extensively tested and is (or was) being used for commercial production.

The Formula I and Formula II mixtures of this invention can additionally be used in combination with other commercial herbicides, insecticides or fungicides. A mixture of one or more of the following herbicides with the Formula I and Formula II mixtures of this invention may be particularly useful for weed control. Examples of other herbicides as mixture partners are: acetochlor, acifluorfen and its sodium salt, acrolein (2-propenal), alachlor, ametryn, amidosulfuron, amitrole, ammonium sulfamate, asulam, atrazine, benazolin, benazolin-ethyl, benfluralin, benfuresate, bensulide, bentazone, bifenox, 2,6-bis (4,6-dimethoxy-2-pyrimidinyl)oxy!benzoic acid, bromacil, bromoxynil, bromoxynil octanoate, butachlor, butralin, butylate, carbetamide, chlomethoxyfen, chloramben, chlorbromuron, chloridazon, chlornitrofen, 2- 4-chloro-5-(cyclopentyloxy)-2 -fluorophenyl!-4,5,6,7-tetrahydro-1H-indene-1,3(2H)-dione (KPP-314), 3- 4-chloro-2-fluoro-5-(cyclopentyloxy)phenyl!-5-(1-methylethylidene)-2,4-oxazolidinedione, 3- 4-chloro-2-fluoro-5-(1-methyl-2-propynyloxy)phenyl!-5-(1-methylethylidene!-2,4-oxaxolidinedione, 2- 2-(3-chlorophenyl)-2-oxiranyl!methyl!-2-ethyl-1H-indene-1,3(2H)-dione (MK-243), chlorotoluron, chlorpropham, chlorthal-dimethyl, clopyralid, cinmethylin, cinosulfuron, clethodim, clomazone, clopyralid, clopyralid-olamine, cyanazine, cycloate, N- 2-(cyclopropylcarbonyl)phenyl!amino!sulfonyl!-N'-(4,6-dimethoxy-2-pyrimidinyl)urea, cyclosulfamuron, cycloxydim, 2,4-D and its butotyl, butyl, isoctyl and isopropyl esters and its dimethylammonium, diolamine and trolamine salts, cyhalofop-butyl, daimuron, dalapon, dalapon-sodium, dazomet, 2,4-DB and its dimethylammonium, potassium and sodium salts, desmedipham, desmetryn, dicamba and its dimethylammonium, potassium and sodium salts, dichlobenil, 3- 1-(3,5-dichlorophenyl)-1-methylethyl!-2,3-dihydro-6-methyl-5-phenyl-4H-1,3-oxazin-4-one, 3- 2,4-dichloro-5-(2-propynyloxy)phenyl!-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one, dichlorprop, diclofop-methyl, N,N-diethyl-3- (2,4,6-trimethylphenyl)sulfonyl!-1H-1,2,4-triazole-1-carboxamide (CH 900), difenzoquat metilsulfate, diflufenican, dimefuron, 6- 6,7-dihydro-6,6-dimethyl-3H,5H-pyrrolo 2,1-c! 1,2,4!thiadiazol-3-ylidine!amino!-7-fluoro-4-(2-propynyl)-2H-1,4-benzoxazin-3(4H)-one, dimepiperate, dimethylarsinic acid and its sodium salt, dinitramine, diphenamid, diquat dibromide, dithiopyr, diuron, DNOC, endothal, EPTC, esprocarb, ethalfluralin, ethofumesate, ethyl 2-chloro-5- 4-chloro-5-(difluoromethoxy)-1-methyl-1H-pyrazol-3-yl!-4-fluorophenoxy!acetate, ethyl α,2-dichloro-5- 4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl!-4-fluorobenzenepropanoate, etobenzanid, fenoxaprop-ethyl, fenoxaprop-P-ethyl, fenuron, fenuron-TCA, flamprop-methyl, flamprop-M-isopropyl, flamprop-M-methyl, flazasulfuron, fluazifop-butyl, fluazifop-P-butyl, fluchloralin, flumetsulam, flumicloracpentyl, flumioxazin, fluometuron, fluoroglycofen-ethyl, flupoxam, fluridone, flurochloridone, fluroxypyr, fomesafen, fosamine-ammonium, glufosinate, glufosinate-ammonium, glyphosate, glyphosate-isopropylammonium, glyphosate-sesquisodium, glyphosate-trimesium, halosulfuron-methyl, haloxyfop-etotyl, haloxyfop-methyl, hexazinone, imazamethabenz-methyl, imazapyr, imazaquin, imazaquin-ammonium, imazethapyr, imazethapyr-ammonium, imazosulfuron, ioxynil, ioxynil octanoate, ioxynil-sodium, isoproturon, isouron, isoxaben, lactofen, lenacil, linuron, maleic hydrazide, MCPA and its dimethylammonium, potassium and sodium salts, MCPA-isoctyl, mecoprop, mecoprop-P, mefenacet, mefluidide, metam-sodium, metazachlore, methabenzthiazuron, methyl 2-chloro-4-fluoro-5- (tetrahydro-3-oxo-1H,3H- 1,3,4!thiadiazolo 3,4-α!pyridazin-1-ylidene)amino!phenyl!thio!acetate (KIH 9201), methylarsonic acid and its calcium, monoammonium, monosodium and disodium salts, methyl 1- 5- 2-chloro-4-(trifluoromethyl)phenoxy!-2-nitrophenyl!-2-methoxyethylidene!amino!oxy!acetate (AKH-7088), methyl 3-chloro-5- 4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-1-methyl-1H-pyrazole-4-carboxylate, methyl 2- (4,6-dimethoxy-2-pyrimidinyl)oxy!-6- 1-(methoxyimino)ethyl!benzoate (KIH 6127), methyl 5- (4,6-dimethyl-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-1-(2-pyridinyl)-1H-pyrazole-4-carboxylate (NC-330), N-(4-fluoro-phenyl)-N-(1-methylethyl)-2- 5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl!oxy!acetamide, metobenzuron, metolachlor, metoxuron, metribuzin, metsulfuron-methyl, molinate, monolinuron, napropamide, naptalam, neburon, norflurazon, oryzalin, oxadiazon, oxyfluorfen, paraquat dichloride, pebulate, pendimethalin, perfluidone, phenmedipham, picloram, picloram-potassium, pretilachlor, primisulfuron-methyl, prometon, prometryn, propachlor, propanil, propaquizafop, propazine, propham, propyzamide, prosulfuron, pyrazolynate, pyrazosulfuron-ethyl, pyributicarb, pyridate, quinclorac, quinmerac, quizalofop-ethyl, quizalofop-P-ethyl, quizalofop-P-tefuryl, sethoxydim, siduron, simazine, sulfentrazone, TCA, TCA-sodium, tebutame, tebuthiuron, terbacil, terbuthylazine, terbutryn, thenylchlor, thiobencarb, tralkoxydim, tri-allate, triasulfuron, triclopyr, triclopyr-butotyl, triclopyr-triethylammonium, tridiphane, trifluralin, and vernolate.

For mixtures of the compound of Formula I with the compounds of Formula IIa or Formula IIn, the following herbicide mixture partners are particularly useful: bensulfuron methyl, butachlor, 3- 1-(3,5-dichlorophenyl)-1-methylethyl!-2,3-dihydro-6-methyl-5-phenyl-4H-1,3-oxazin-4-one, methyl 2- (4,6-dimethoxy-2-pyrimidinyl)oxy!-6- 1-(methoxyimino)ethyl!benzoate (KIH 6127), molinate, 2- 2-(3-chlorophenyl)-2-oxiranyl!methyl!-2-ethyl-1H-indene-1,3(2H)-dione (MK-243), cinosulfuron, N,N-diethyl-3- (2,4,6-trimethylphenyl)sulfonyl!-1H-1,2,4-triazole-1-carboxamide (CH 900), etobenzanid, mefenacet, pretilachlor, pyrazosulfuron methyl, pyributicarb and thiobencarb.

For mixtures of the compound of Formula I with the compound of Formula IIe, the following herbicide mixture partners are particularly useful: barban, benazolin, carbetamid, clopyralid, cyanazine, cycloxydim, dimefuron, fluazifop, haloxyfop, isoxaben, metazachlore, napropamide, propaquizafop, propyzamide, pyridate, quizalofop, sethoxydim, TCA, tebutame, and trifluralin.

For mixtures of the compound of Formula I with the compounds of Formula IIb, Formula IIi, Formula IIj, Formula IIl or Formula IIm, besides combinations of the compounds of Formulae IIb, IIi, IIj, IIl and IIm themselves, the following herbicide mixture partners are particularly useful: amidosulfuron, 3-chloro-5- 4,6-dimethoxy-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-1-methyl-1H-pyrazole-4-carboxylate, cinosulfuron, N- 2-(cyclopropylcarbonyl)phenyl!amino!sulfonyl!-N'-(4,6-dimethoxy-2-pyrimidinyl)urea, imazamethabenz, mefluidide, prosulfuron and triasulfuron, and herbicides with a similar spectrum of control but a different mode of action such as, but not limited to: barban, bentazon, bifenox, bromoxynil, bromoxynil heptanoate, bromoxynil octanoate, chloridazon, 2- 4-chloro-5-(cyclopentyloxy)-2-fluorophenyl!-4,5,6,7-tetrahydro-1H-indene-1,3(2H)-dione, 3- 4-chloro-2-fluoro-5-(1-methyl-2-propynyloxy)phenyl!-5-(1-methylethylidene!-2,4-oxaxolidinedione, chlortoluron, clodinafop, clopyralid, cyanazine, cyhalofop-butyl, dicamba, diclofop, dichlorprop, diclofop, difenzoquat, diflufenican, 6- 6,7-dihydro-6,6-dimethyl-3H,5H-pyrrolo 2,1-c!- 1,2,4!thiadiazol-3-ylidine!amino!-7-fluoro-4-(2-propynyl)-2H-1,4-benzoxazin-3(4H)-one, ethyl 2-chloro-5- 4-chloro-5-(difluoromethoxy)-1-methyl-1H-pyrazol-3-yl!-4-fluorophenoxy!acetate, ethyl α,2-dichloro-5- 4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl!-4-fluorobenzenepropanoate, fenoxaprop, flamprop, N-(4-fluorophenyl)-N-(1-methylethyl)-2- 5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl!oxy!acetamide, fluoxypyr, flupoxam, fluridone, flurtamone, glufosinate, glyphosate, ioxynil, isoproturon, isoxaben, MCPA, MCPA-thioethyl, MCPB, mecoprop, mecoprop-P, methabenzthiazuron, methyl metribuzin, pendimethalin, tri-allate, tralkoxydim, trifluralin, (2,4-dichlorophenoxy)acetic acid, and 4-(2,4-dichlorophenoxy)butanoic acid.

For mixtures of the compound of Formula I with the compound of Formula IIi, the following herbicide mixture partners are also particularly useful: chlorimuron ethyl, cloransulam methyl, 2- 4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl!-5-(methoxymethyl)-3-pyridinecarboxylic acid, flumetsulam, halosulfuron, imazaquin, imazethapyr, nicosulfuron, 3-oxetanyl 2- (4,6-dimethyl-2-pyrimidinyl)amino!sulfonyl!benzoate, prosulfuron, pyrithiobac sodium and rimsulfuron, and herbicides with a similar spectrum of control but a different mode of action such as, but not limited to: acetochlor, acifluorfen, alachlor, atrazine, benazolin, bentazon, butylate, methyl 2-chloro-4-fluoro-5- (5,6,7,8-tetrahydro-3-oxo-1H,3H- 1,3,4!thiadiazolo 3,4-a!pyridazin-1-ylidene)amino!phenyl!thio!acetate, clethodim, clomazone, clopyralid, cyanazine, 2,4-D, 2,4-DB, dicamba, α,2-dichloro-5- 4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl!-4-fluorobenzenepropanoate, dimethenamid, disodium metharsonate, diuron, EPTC, ethalfluralin, fenoxaprop, fluazifop, fluazifop-P, fluminclorac pentyl ester, flumioxazin, fluometuron, fomesafen, glufosinate, glyphosate, haloxyfop, isoxaflutole, lactofen, linuron, MCPA, metolachlor, metribuzin, mefluidide, monosodium metharsonate, norfluazon, paraquat, pendimethalin, pyridate, quizalofop-ethyl, quizalofop-P-ethyl, sethoxydim, simazine, sulcotrione, thiafluamide, tridiphane, trifluralin and vernolate.

For mixtures of the compound of Formula I with the compounds of Formula IIc, Formula IIf and Formula IIg, besides combinations of the compounds of Formulae IIc, IIf and IIg themselves, the following herbicide mixture partners are particularly useful: cloransulam methyl, 2- 4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl!-5-(methoxymethyl)-3-pyridinecarboxylic acid, flumetsulam, halosulfuron, imazaquin, imazethapyr, 3-oxetanyl 2- (4,6-dimethyl-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!benzoate, primisulfuron, prosulfuron, pyrithiobac sodium and thifensulfuron methyl, and herbicides with a similar spectrum of control but a different mode of action such as, but not limited to: acetochlor, acifluoren, alachlor, atrazine, benazolin, bentazon, butylate, methyl 2-chloro-4-fluoro-5- (5,6,7,8-tetrahydro-3-oxo-1H,3H- 1,3,4!thiadiazolo 3,4-a!pyridazin-1-ylidene)amino!phenyl!thio!acetate, clethodim, clomazone, clopyralid, cyanazine, 2,4-D, 2,4-DB, dicamba, α,2-dichloro-5- 4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl!-4-fluorobenzenepropanoate, dimethenamid, disodium metharsonate, diuron, EPTC, ethalfluralin, fenoxaprop, fluazifop, fluazifop-P, fluminclorac pentyl ester, flumioxazin, fluometuron, fomesafen, glufosinate, glyphosate, haloxyfop, isoxaflutole, lactofen, linuron, MCPA, metolachlor, metribuzin, mefluidide, monosodium metharsonate, norfluazon, paraquat, pendimethalin, pyridate, quizalofop-ethyl, quizalofop-P-ethyl, sethoxydim, simazine, sulcotrione, thiafluamide, tridiphane, trifluralin and vernolate.

For mixtures of the compound of Formula I with the compound of Formula IIh, the following herbicide mixture partners are also particularly useful: ammonium fosamine, chlorsulfuron, diuron, glufosinate, glyphosate, metsulfuron methyl, norfluazon, oryzalin, oxyfluorfen, paraquat, terbacil and simazine.

For mixtures of the compound of Formula I with the compound of Formula Ilk, the following herbicide mixture partners are also particularly useful: alloxydim-sodium, barban, chloridazon, chlorpropham, cycloate, cycloxidim, dalapon, desmedipham, diallate, diclofop, diethatyl ethyl, diquat, endothall, EPTC, ethofumesate, fenuron, fluazifop, glufosinate, glyphosate, lenacil, metamitron, paraquat, pebulate, phenmedipham, propham, quinmerac, quizalofop, sethoxydim, TCA, triallate and trifluralin.

For mixtures of the compound of Formula I with the compound of Formula IIo, the following herbicide mixture partners are also particularly useful: ametryn, asulam, atrazine, bromacil, diuron, metribuzin, norfluazon, pendimethalin, terbacil and trifluralin.

Mixtures of the compound of Formula I with mixtures of the compounds of Formulae IIa and IId are particularly useful, especially when the weight ratio of the compound of Formula IIa to the compound of Formula IId is about 1:4 to 1:5. Mixtures of the compound of Formula I with mixtures of the compounds of Formulae IIb and IIc are particularly useful, especially when the weight ratio of the compound of Formula IIb to the compound of Formula IIc is about 1:1. Mixtures of the compound of Formula I with mixtures of the compounds of Formulae IIb and IId are particularly useful, especially when the weight ratio of the compound of Formula IIb to the compound of Formula IId is about 1:5. Mixtures of the compound of Formula I with mixtures of the compounds of Formulae IIg and IIi are particularly useful, especially when the weight ratio of the compound of Formula IIg to the compound of Formula IIi is about 2:1. Mixtures of the compound of Formula I with mixtures of the compounds of Formulae IIc and IIf are also particularly useful.

In certain instances, combinations with other herbicides having a similar spectrum of control but a different mode of action will be particularly advantageous for resistance management.

Generally, the herbicidally effective amounts of the compounds of Formula I and Formula II in the mixtures will vary depending on the specific compounds selected, environmental conditions, formulation, method of application, amount and type of vegetation present, etc. The herbicidally effective amounts of Formula I relative to Formula IIa-m compounds are generally in a ratio of 4000:1 to 1:10, the ratio of the Formula I to Formula IIn compound is generally 5:1 to 1:500, and the ratio of the Formula I to Formula IIo compound is generally 100:1 to 1:10. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIa-m compounds are generally in a ratio of 600:1 to 10:7. More specifically, the herbicidally effective amounts of Formula I relative to Formula IIa are preferably in a ratio of 75:1 to 1:2, with the most preferred ratios being 19:1 to 3:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIb are in a ratio of 250:1 to 1:1, with the most preferred ratios being 75:1 to 25:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIc are in a ratio of 250:1 to 1:1, with the most preferred ratios being 60:1 to 4:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIe are in a ratio of 250:1 to 1:1, with the most preferred ratios being 20:1 to 2:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIf are in a ratio of 75:1 to 1:2, with the most preferred ratios being 25:1 to 2:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIg are in a ratio of 100:1 to 1:1, with the most preferred ratios being 25:1 to 4:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula 11h are in a ratio of 250:1 to 2:1, with the most preferred ratios being 150:1 to 15:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIi are in a ratio of 250:1 to 1:1, with the most preferred ratios being 30:1 to 4:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIj are in a ratio of 250:1 to 1:1, with the most preferred ratios being 30:1 to 4:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIk are in a ratio of 250:1 to 1:2, with the most preferred ratios being 30:1 to 4:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIl are in a ratio of 250:1 to 1:1, with the most preferred ratios being 50:1 to 10:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIm are in a ratio of 250:1 to 1:1, with the most preferred ratios being 30:1 to 4:1. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIn are in a ratio of 2:1 to 1:200, with the most preferred ratios being 1:1 to 1:50. Preferably, the herbicidally effective amounts of Formula I relative to Formula IIo are in a ratio of 50:1 to 1:1, with the most preferred ratios being 30:1 to 2:1.

Generally a herbicidally effective amount of the Formula I compound is applied at a rate from 5 to 2000 g ai/ha, and, in general, the herbicidally effective amount of each Formula IIa-m compound present in the mixture is applied at a rate from 0.25 to 200 g ai/ha, and the Formula IIn compound, if present, is applied at a rate of 150 to 5000 g/ha, and the Formula IIo compound, if present, is applied at a rate of 10 to 2000 g ai/ha. Preferably, the Formula I compound is applied at a rate from 40 to 600 g ai/ha, and, in general, and each Formula IIa-m compound present is applied at a rate from 1 to 35 g ai/ha. Preferably, the Formula IIa compound is applied at a rate from 0.5 to 50 g ai/ha, and most preferably at rate from 6 to 32 g ai/ha. Preferably, the Formula IIb compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 1 to 20 g ai/ha. Preferably, the Formula IIc compound is applied at a rate from 1 to 35 g ai/ha, and most preferably at rate from 2 to 20 g ai/ha. Preferably, the Formula IIe compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 5 to 30 g ai/ha. Preferably, the Formula IIf compound is applied at a rate from 1 to 200 g ai/ha, and most preferably at rate from 4 to 100 g ai/ha. Preferably, the Formula IIg compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 2 to 50 g ai/ha. Preferably, the Formula IIh compound is applied at a rate from 0.25 to 70 g ai/ha, and most preferably at rate from 0.5 to 20 g ai/ha. Preferably, the Formula IIi compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 2 to 50 g ai/ha. Preferably, the Formula IIj compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 5 to 30 g ai/ha. Preferably, the Formula IIk compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 5 to 30 g ai/ha. Preferably, the Formula IIl compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 1 to 40 g ai/ha. Preferably, the Formula IIm compound is applied at a rate from 0.5 to 100 g ai/ha, and most preferably at rate from 5 to 30 g ai/ha. Preferably, the Formula IIn compound is applied at a rate from 200 to 4000 g ai/ha, and most preferably at a rate from 200 to 3000 g ai/ha. Preferably, the Formula IIo compound is applied at a rate from 15 to 1000 g ai/ha, and most preferably at rate from 20 to 200 g ai/ha. For best synergistic control of Cyperus difformis and Cyperus iria by mixtures of Formula I and Formula IIa, the Formula I compound is applied at application rates less than 50 g ai/ha and the Formula IIa compound is applied at application rates less than 2 g ai/ha. For best synergistic control of Cyperus iria by mixtures of Formula I and Formula IIc, the Formula I compound is applied at applications rates greater than 25 g ai/ha and the Formula IIc compound is applied at application rates less than 2 g ai/ha. For best synergistic control of Heteranthera limosa by mixtures of Formula I, Formula IIb and Formula IIc, the Formula I compound is applied at application rates greater than 50 g ai/ha. For best synergistic control of Heteranthera limosa by mixtures of Formula I, Formula IIb and Formula IId, the Formula I compound is applied at application rates greater than 25 g ai/ha, the Formula IIb compound is applied at application rates greater than 0.1 g ai/ha and the Formula IId compound is applied at application rates greater than 0.5 g ai/ha. For best synergistic control of Sinapsis arvensis by mixtures of Formula I and Formula IIh, the mixtures are applied preemergence. For best synergistic control of Echinochloa crus-galli by mixtures of Formula I and Formula IIh, the mixtures are applied preemergence and the Formula I compound is applied at application rates greater than 32 g ai/ha and less than 250 g ai/ha. For best synergistic control of Echinochloa crus-galli by mixtures of Formula I and Formula IIn, the Formula I compound is applied at application rates greater than 50 g ai/ha. One skilled in the art can readily determine herbicidally effective application rates and ratios of the herbicide of Formula I to the herbicides of Formula II as well as timing necessary for the desired level of weed control and crop safety.

The Formula I phosphorodithioate (Compound 1) was tested in combination with the Formula IIa sulfonylurea (Compound 2), the Formula IIb sulfonylurea (Compound 3), the sodium salt of the Formula IIl sulfonylurea (Compound 4), the Formula IIl sulfonylurea (Compound 5), the Formula IIj sulfonylurea (Compound 6) the Formula IIm sulfonylurea (Compound 7), the Formula IIe sulfonylurea (Compound 8), the Formula IIf sulfonylurea (Compound 9), the Formula IIg sulfonylurea (Compound 10), the Formula IIc sulfonylurea (Compound 11), the Formula IIk sulfonylurea (Compound 12), the Formula IIn propanamide (Compound 13), the Formula IIh sulfonylurea (Compound 14), the Formula IIo triazinedione (Compound 15), and the Formula IId sulfonylurea (Compound 16). The compounds of Formula I and Formula II are listed below by number referred to in the following test data: ##STR32##

The following test protocol was used for the test in Table A. Compound numbers are as described above. The data demonstrate the efficacy of the Formula I and Formula IIa mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test A Protocol

Plastic pots were partially filled with silt loam soil. The soil was then flooded with water, and 1.5-2.0-leaf transplants of rice (Oryza saliva) tropical japonica cult. `Cypress` were planted in the soil. Seeds of barnyardgrass (Echinochloa crus-galli) were planted in saturated soil, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 3 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 24 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table A are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

For Test A, the mean response of each treatment was determined. Colby's equation was used to calculate the expected additive herbicidal effect of the mixtures of Compound 1 and Compound 2. Colby's equation (Colby, S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide Combinations," Weeds, 15(1), pp 20-22 (1967)) calculates the expected additive effect of herbicidal mixtures, and for two active ingredients is of the form:

    P.sub.a+b =P.sub.a +P.sub.b -(P.sub.a P.sub.b /100)

wherein

P_(a+b) is the percentage effect of the mixture expected from additive contribution of the individual components,

P_(a) is the observed percentage effect of the first active ingredient at the same use rate as in the mixture, and

P_(b) is the observed percentage effect of the second active ingredient at the same use rate as in the mixture.

Results of Test A are shown in Table A, which lists the mean response of a specific weed to Compound 1 and Compound 2 applied alone as single active ingredients, applied as a mixture of Compound 1 and Compound 2, and the expected additive effect of the herbicidal mixture of Compound 1 and Compound 2 (from Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 2. Different ratios of Compound 1 to Compound 2, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE A*                                                         ______________________________________                                         Effect of Compound 1 and Compound 2 as                                         Active Ingredients Alone and in Mixture                                        Compound                                                                               Compound  Rice (3.5 L.S.)                                                                             Barnyardgrass (2 L.S.)                          1       2         Mean    Expected†                                                                      Mean  Expected                                ______________________________________                                         Alone                                                                          25      0         0       --     23    --                                      50      0         0       --     38    --                                      150     0         0       --     68    --                                       0      2         0       --      5    --                                       0      4         0       --     10    --                                       0      8         0       --     43    --                                       0      16        5       --     83    --                                      Mixtures                                                                       25      2         0       0       0    27                                      50      2         0       0      38    41                                      150     2         0       0      80    70                                      25      4         0       0       5    31                                      50      4         0       0      25    34                                      150     4         0       0      73    72                                      25      8         15      0      95    56                                      50      8         20      0      77    65                                      150     8         30      0      99    82                                      25      16        33      5      95    87                                      50      16        38      5      98    90                                      150     16        38      5      99    95                                      ______________________________________                                          *Application rates are expressed in g ai/ha for both Compound 1 and            Compound 2. Data are reported as percent control.                              †Colby, S. R. "Calculating Synergistic and Antagonistic Responses       of Herbicide Combinations," Weeds, 15(1), pp 20-22 (1967).               

The following protocol was used for the test in Table B. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIb mixtures, mad Formula I and Formula IIl mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test B Protocol

Triticum aestivum cult. `Recital` (TRZAS-R) (winter wheat), Triticum aestivum cult. `Era` (TRZAS-E) (spring wheat), Aegilops cylindrica (AEGCY), Bromus tectorum (BROTE), Lolium multiflorum (LOLMU), Avena fatua (AVEFA), Setaria viridis (SETVI), Kochia scoparia (KCHSC), Apera spica-venti (APESV), Phalaris minor (PHAMI), Alopecurus myosuroides (ALOMY), and Poa annua (POAAN) were grown in a greenhouse to approximately the two-leaf stage in 17-cm diameter round fiber pots filled with a mixture of 60% sandy loam soil and 40% Metro-Mix 350™ growing medium. Compound 1 was formulated as a single active ingredient in 30% emulsifiable concentrate. Compound 3 was formulated as a single active ingredient in 60% strength dry flowable granules. Compound 4 was formulated as a single active ingredient in 50% strength dry flowable granules. Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent, and spraying the treatments onto the plants. Compound 1 was applied at 62, 125, 250, and 500 g ai/ha. Compound 3 was applied at 4 g ai/ha. Compound 4 was applied at 8 g ai/ha. Mixtures of Compound 1 at 62 g ai/ha and Compound 3 at 4 g ai/ha, Compound 1 at 125 g ai/ha and Compound 3 at 4 g ai/ha, Compound 1 at 250 g ai/ha and Compound 3 at 4 g ai/ha, Compound 1 at 500 g ai/ha and Compound 3 at 4 g ai/ha, Compound 1 at 62 g ai/ha and Compound 4 at 8 g ai/ha, Compound 1 at 125 g ai/ha and Compound 4 at 8 g ai/ha, Compound 1 at 250 g ai/ha and Compound 3 at 4 g ai/ha, and Compound 1 at 500 g ai/ha and Compound 4 at 8 g ai/ha were also applied. These treatments were replicated two times. After treatment, the plants were maintained in a greenhouse and evaluated 19 days after spraying. All sprayed plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test B are shown in Table B, which lists the mean response of specific weeds to Compound 1, Compound 3 and Compound 4 applied alone as single active ingredients, the mean response of specific weeds to mixtures of Compound 1 and Compound 3, the expected additive effect of the herbicidal mixture of Compound 1 and Compound 3 (Colby's equation), the mean response of specific weeds to mixtures of Compound 1 and Compound 4, and the expected additive effect of the herbicidal mixture of Compound 1 and Compound 4 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 3, and by mixtures of Compound 1 and Compound 4. Different ratios of Compound 1 to Compound 3, and Compound 1 to Compound 4, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                                      TABLE B*                                     __________________________________________________________________________     Effect of Compound 1, Compound 3 and Compound 4 as                             Active Ingredients Alone and in Mixture                                        __________________________________________________________________________     CMPD 1                                                                              CMPD 3                                                                              CMPD 4  TRZAS-R                                                                             TRZAS-E                                                                             AEGCY                                                                               BROTE                                                                              LOLMU                                                                               AVEFA                                __________________________________________________________________________     Alone                                                                           0   4    0    Mean                                                                               0    8    0   18  68   18                                    0   0    8    Mean                                                                              25   18   38   43  78   33                                    62  0    0    Mean                                                                               0    0    0    0   0    0                                   125  0    0    Mean                                                                               0    0    0    0   0    0                                   250  0    0    Mean                                                                              13    0    0    5  30   15                                   500  0    0    Mean                                                                               8    8    0    0  63   28                                   Mixtures                                                                        62  4    0    Mean                                                                              10    0   25   28  73   28                                                  Exp.†                                                                       0    8    0   18  68   18                                   125  4    0    Mean                                                                              20    0   10   30  78   35                                                  Exp.                                                                               0    8    0   18  68   18                                   250  4    0    Mean                                                                              23    8    5   28  78   43                                                  Exp.                                                                              13    8    0   22  77   30                                   500  4    0    Mean                                                                              25   13   20   33  83   60                                                  Exp.                                                                               8   14    0   18  88   40                                    62  0    8    Mean                                                                              33   15   33   50  80   28                                                  Exp.                                                                              25   18   38   43  78   33                                   125  0    8    Mean                                                                              30    5   33   43  80   35                                                  Exp.                                                                              25   18   38   43  78   33                                   250  0    8    Mean                                                                              33   18   30   45  80   35                                                  Exp.                                                                              34   18   38   45  84   43                                   500  0    8    Mean                                                                              28   15   30   43  78   35                                                  Exp.                                                                              31   24   38   43  92   51                                   __________________________________________________________________________     CMPD 1                                                                              CMPD 3                                                                              CMPD 4  SETVI                                                                               KCHSC                                                                              APESV                                                                               PHAMI                                                                              ALOMY                                                                               POAAN                                 __________________________________________________________________________     Alone                                                                           0   4    0    Mean                                                                              43   100 70   65  63   65                                     0   0    8    Mean                                                                              80   100 78   68  95   80                                     62  0    0    Mean                                                                               0    0   0    0  13    0                                    125  0    0    Mean                                                                              30    18 10   25  23   15                                    250  0    0    Mean                                                                              35    40  8   53  48   80                                    500  0    0    Mean                                                                              68    50 35   88  80   80                                    Mixtures                                                                       62   4    0    Mean                                                                              38   100 85   83  75   80                                                   Exp.†                                                                      43   100 70   65  67   65                                    125  4    0    Mean                                                                              78   100 90   78  80   85                                                   Exp.                                                                              60   100 73   74  71   70                                    250  4    0    Mean                                                                              93   100 93   85  85   88                                                   Exp.                                                                              63   100 72   83  80   93                                    500  4    0    Mean                                                                              88   100 100  90  85   98                                                   Exp.                                                                              81   100 81   96  93   93                                    62   0    8    Mean                                                                              83   100 90   78  95   93                                                   Exp.                                                                              80   100 78   68  96   80                                    125  0    8    Mean                                                                              80   100 95   85  98   95                                                   Exp.                                                                              86   100 80   76  96   83                                    250  0    8    Mean                                                                              90   100 95   83  100  100                                                  Exp.                                                                              87   100 79   85  97   96                                    500  0    8    Mean                                                                              98   100 100  83  100  100                                                  Exp.                                                                              94   100 85   96  99   96                                    __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1, Compound 3 and Compound 4      Data are reported as percent control.                                          †"Exp." are expected responses calculated according to Colby, S. R      "Calculating Synergistic and Antagonistic Responses of Herbicide               Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table C. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIi mixtures, the Formula I and Formula IIj mixtures, and the Formula I and Formula IIm mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test C Protocol

Triticum aestivum cult. `Recital` (TRZAS-R) (winter wheat), Triticum aestivum cult. `Era` (TRZAS-E) (spring wheat), Aegilops cylindrica (AEGCY), Bromus tectorum (BROTE), Avena fatua (AVEFA), Setaria viridis (SETVI), Apera spica-venti (APESV), Phalaris minor (PHAMI), Poa annua (POAAN), an ordinary suceptible biotype of Alopecurus myosuroides (ALOMY-S), and a biotype of Alopecurus myosuroides (ALOMY-R) shown to be resistant to certain substituted urea, arylphenoxy, and cyclohexenone herbicides (Clarke, J. H; Moss, S. R. (1991) "The occurrence of herbicide-resistant Alopecurus myosuroides (black-grass) in the United Kingdom and strategies for its control" Brighton Crop Protection Conference--Weeds, 1041-1048) were grown in a greenhouse to approximately the two-leaf stage in 17-cm diameter round fiber pots filled with a mixture of 60% sandy loam soil and 40% Metro-Mix 350™ growing medium. Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent, and spraying the treatments onto the plants. Compound 1 was applied at 500 g ai/ha. Compounds 5, 6 and 7 were each applied at 16 g ai/ha. Mixtures of Compound 1 at 500 g ai/ha and Compound 5 at 16 g ai/ha, Compound 1 at 500 g ai/ha and Compound 6 at 16 g ai/ha, and Compound 1 at 500 g ai/ha and Compound 7 at 16 g ai/ha were also applied. After treatment, the plants were maintained in a greenhouse and were evaluated 16 days after spraying. All sprayed plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test C are shown in Table C, which lists the observed response of specific weeds to Compound 1, Compound 5, Compound 6 and Compound 7 applied alone as single active ingredients, the observed response of specific weeds to mixtures of Compound 1 and Compound 5, the expected additive effect of the herbicidal mixture of Compounds 1 and Compound 5 (Colby's equation), the observed response of specific weeds to mixtures of Compound 1 and Compound 6, the expected additive effect of the herbicidal mixture of Compound 1 and Compound 6 (Colby's equation), the observed response of specific weeds to mixtures of Compound 1 and Compound 7, and the expected additive effect of the herbicidal mixture of Compound 1 and Compound 7 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 5, by mixtures of Compound 1 and Compound 6, and by mixtures of Compound 1 and Compound 7. Different ratios of Compound 1 to Compound 5, Compound 1 to Compound 6, and Compound 1 to Compound 7, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                                      TABLE C*                                     __________________________________________________________________________     Effect of Compound 1, Compound 5, Compound 6 and Compound 7 as                 Active Ingredients Alone and in Mixture                                        __________________________________________________________________________     CMPD 1                                                                              CMPD 5                                                                              CMPD 6                                                                              CMPD 7  TRZAS-R                                                                             TRZAS-E                                                                             AEGCY                                                                               BROTE                                                                              AVEFA                                                                              SETVI                            __________________________________________________________________________     Alone                                                                           0   0    0    16   Obs.†                                                                      30   0    35   25  25  70                                0   0    16   0    Obs.                                                                              30   0    65    0  35  60                                0   16   0    0    Obs.                                                                              25   0    25   50   0  45                               500  0    0    0    Obs.                                                                               0   0    10    0   0  40                               Mixtures                                                                       500  16   0    0    Obs.                                                                              25   10   45   65   0  80                                                   Exp.†                                                                      25   0    32   50   0  67                               500  0    16   0    Obs.                                                                              35   25   65   30  65  85                                                   Exp.                                                                              30   0    68    0  35  76                               500  0    0    16   Obs.                                                                              30   15   45   60  40  85                                                   Exp.                                                                              30   0    42   25  25  82                               __________________________________________________________________________     CMPD 1                                                                              CMPD 5                                                                              CMPD 6                                                                              CMPD 7  APESV                                                                               PHAMI                                                                              POAAN ALOMY-S                                                                              ALOMY-R                            __________________________________________________________________________     Alone                                                                           0   0    0    16   Obs.†                                                                      40   65  65    50    10                                  0   0    16   0    Obs.                                                                               0    0  40    60     0                                  0   16   0    0    Obs.                                                                              80   40  60    65     0                                 500  0    0    0    Obs.                                                                               0   70  65    65     0                                 Mixtures                                                                       500  16   0    0    Obs.                                                                              95   85  90    90    60                                                     Exp.†                                                                      80   82  86    88     0                                 500  0    16   0    Obs.                                                                              90   85  90    85    35                                                     Exp.                                                                               0   70  79    86     0                                 500  0    0    16   Obs.                                                                              90   90  85    80    40                                                     Exp.                                                                              40   90  88    82    10                                 __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1, Compound 5, Compound 6 an      Compound 7. Data are reported as percent control.                              †"Obs." are the observed responses. "Exp." are expected responses       calculated according to Colby, S. R. "Calculating Synergistic and              Antagonistic Responses of Herbicide Combinations," Weeds, 15(1), pp 20-22      (1967).                                                                  

The following protocol was used for the test in Table D. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIe mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test D Protocol

Triticum aestivum cult. `Recital` (TRZAS-R), Triticum aestivum cult. `Era` (TRZAS-E), Hordeum vulgare cult. `Igri` (HORVX), Brassica napus (BRSNN), Avena fatua (AVEFA), Alopecurus myosuroides (ALOMY), Lolium multiflorum (LOLMU), Apera spica-venti (APESV), Galium aparine (GALAP), Polygonum convolvulus (POLCO) and Sinapis arvensis (SINAR) were grown in a greenhouse to approximately the two-leaf stage in 15×20 cm rectangular fiber pots filled with a mixture of 60% sandy loam soil and 40% Metro-Mix 350™ growing medium. Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent, and spraying the treatments onto the plants. Compound 1 was applied at 62 and 250 g ai/ha. Compound 8 was applied at 16 g ai/ha. Mixtures of Compound 1 at 62 g ai/ha and Compound 8 at 16 g ai/ha, and Compound 1 at 250 g ai/ha and Compound 8 at 16 g ai/ha were also applied. After treatment, the plants were maintained in a greenhouse and were evaluated 21 days after spraying. All sprayed plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test D are shown in Table D, which lists the observed response of specific weeds to Compound 1 and Compound 8 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 8, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 8 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 8. Different ratios of Compound 1 to Compound 8, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                                      TABLE D*                                     __________________________________________________________________________     Effect of Compound 1 and Compound 8 as Active Ingredients Alone and in         Mixture                                                                        CMPD                                                                               CMPD                                                                       1   8       TRZAS-R                                                                             TRZAS-E                                                                             HORVX                                                                               BRSNN                                                                              AVEFA                                                                               ALOMY                                                                               LOLMU                                                                               APESV                                                                              GALAP                                                                               POLCO                                                                              SINAR               __________________________________________________________________________     Alone                                                                           0  16  Obs.†                                                                       15   15   35    0  80   65   75   55  80   65  90                   62  0  Obs.                                                                               10    0   20   15   0    0    0    0  40   20  20                  250  0  Obs.                                                                               10   15   20   20   0    0    0    0  30   30  25                  Mixtures                                                                        62 16  Obs.                                                                               40   20   40   35  85   95   90   95  90   80  95                          Exp.†                                                                       23   15   48   15  80   65   75   55  88   72  92                  250 16  Obs.                                                                               55   35   45   35  90   90   90   98  98   80  95                          Exp.                                                                               23   28   48   20  80   65   75   55  86   75  92                  __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1 and Compound 8. Data are        reported as percent control.                                                   †"Obs." are tbe observed responses. "Exp." are expected responses       calculated according to Colby, S. R. "Calculating Synergistic and              Antagonistic Responses of Herbicide Combinations," Weeds, 15(1), pp 20-22      (1967).                                                                  

The following protocol was used for the test in Table E. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIf mixtures and Formula I and Formula IIg mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test E Protocol

Zea mays (corn, maize) cult. `P3180` (ZEAMX-R), Zea mays cult. (corn, maize) `P3180IR` (a commercial variety resistant to inhibitors of acetolactate synthase) (ZEAMX-E), Gossypium hirsutum (cotton) cult. `Coker 312` (GOSHI), Gossypium hirsutum (cotton) cult. `Coker 312--Transgenic` (a line derived from Coker 312 by inclusion of a gene conferring resistance to inhibitors of acetolactate synthase) (GOSHI-T), Glycine max (soybean) cult. `Williams 82` (GLXMA), Glycine max (soybean) cult. `W20` (a commercial variety resistant to inhibitors of acetolactate synthase) (GLXMA-W), Brachiaria plantaginea (BRAPL), Echinochloa crus-galli (ECHCG), Digitaria sanguinalis (DIGSA), Cassia obtusifolia (CASTO), Abutilon theophrasti (ABUTH) and Solanum ptycanthum (SOLPT) were grown in a greenhouse to the following approximate heights and leaf stages in 10-cm square pots containing sterilized sandy loam soil:

    ______________________________________                                                         Application                                                    Species           Height (cm)                                                                              Leaf Stage                                         ______________________________________                                         Zea mays          14        3                                                  Gossypium hirsutum                                                                               7         1                                                  Glycine max       7         1 trifoliate                                       Brachiaria plantaginea                                                                           4         2-3                                                Echinochloa crus-galli                                                                           7         2-3                                                Digitaria sanguinalis                                                                            5         2-3                                                Cassia obtusifolia                                                                               4         1                                                  Abutilon theophrasti                                                                             5         2-4                                                Solanum ptycanthum                                                                               1-4       2-4                                                ______________________________________                                    

Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent containing a surfactant, and spraying the treatments onto the plants using a stationary laboratory circulating belt sprayer calibrated to deliver 280 L/ha though a single nozzle. Compound 1 was applied at 50, 100 and 200 g ai/ha. Compound 9 was applied at 2, 4 and 8 g ai/ha. Compound 10 was applied at 1, 2, and 4 g ai/ha. Mixtures of Compound 1 at 50, 100 and 200 g ai/ha with Compound 9 at 2, 4 and 8 g ai/ha, and Compound 1 at 50, 100 and 200 g ai/ha with Compound 10 at 1,2 and 4 g ai/ha were also applied. Individual treatments were replicated four times, with exception of Solanum ptycanthum, which was replicated once, and Brachiaria plantaginea, which was replicated three instead of four times for some application rates. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 14 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test E are shown in Table E, which lists the observed response of specific weeds to Compound 1, Compound 9 and Compound 10 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 9 and of Compound 1 and Compound 10, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 9 and of Compound 1 and Compound 10 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 9 and of Compound 1 and Compound 10. Different ratios of Compound 1 to Compound 9 and of Compound 1 to Compound 10, and different formulation types, also provide useful weed control from the combination of the two herbicides.

    TABLE E*                                                                          - Effect of Compound 1, Compound 9 and Compound 10 as Active Ingredients        Alone and in Mixture                                                            CMPD 1 CMPD 9 CMPD 10  ZEAMX ZEAMX-R GOSHI GOSHI-T GLXMA GLXMA-W BRAPL         ECHCG DIGSA CASTO ABUTH SOLPT                                                    Alone                                                                            50 0 0 Mean 20 12  0  0  0  0  0  0  0  0                                      0 0                          100 0 0 Mean 15 12 15  2  8  5  3  8  2  0         0 0                                                                             200 0 0 Mean 22 18 25 18 18 18 10 35 15  0                                      0 0                           0 2 0 Mean 18 12  5  5  0  0 27 28  0  0         0 0                                                                               0 4 0 Mean 18 15 48  2  5  2 73 58  5  0                                       5 0                            0 8 0 Mean 20 15 58  5 10  5 83 58 30 20        28 20                                                                                                                                                 0         0 1 Mean 18 12 30                                                                2 72 12 20 65 20 28 18 0                                0 0 2 Mean 12          15 58                                                                            8 82 38 50 88 40 55 55 0                                            0 0        4 Mean 15 12 72 10 92 55 57 100 42 78 70 10                                                                    Mixtures                                           50 2 0 Mean 20 15 25 10 10  2 55 32  8  5                                      5 0                             Exp.† 34 23  5  5  0  0 27 28  0         0                                                                               0 0                                                                            100 2 0 Mean 15 15 40 18  5  5 60 48  8  0                                       2 0                              Exp. 30 23 19  7  8  5 29 34  2  0  0          200 2 0 Mean 15 15 50 18 18 15 70 52 30                                         2 10 0                             Exp. 36 28 29 22 18 18 34 53 15  0          0 0                                                                               50 4 0 Mean 18 12 50 12  5  5 82 58 20                                         0 12 0                             Exp. 34 25 48  2  5  2 73 58  5  0          5 0                                                                              100 4 0 Mean 12 10 68 15 15 15 88 82 22 10 35 0                                    Exp. 30 25 56  4 13  7 74  6  7  0                                           5 0                               200 4 0 Mean 25 12 70 25 20 18 77 80         32 20 45 40                                                                                                                                       Exp.          36 30 61 20 22 20 76 73 19  0                                                    5 0                                         50 8 0 Mean 20 15 68 15 30         15 100  92 40 28 50 50                                                                                                                 Exp. 36 25 58  5         10  5 83 58 30 20 28 20                                                                                                            100 8 0 Mean 12 10 72        20 40 20 90 95 50 35 52 60                                                                                                         Exp. 32 25 64  7 17          10 84 61 31 20 28 20                                                                                                                  200 8 0 Mean 12 12        70 32 35 22 97 100  52 55 58 60                                                                                               Exp. 38 30 68 22 26 22 85         73 40 20 28 20                                                                                                                               50 0 1 Mean        12 10 60 10 80 48 53 62 32 25 32 0                                                  Exp. 34 23 30                                                                2 72 12 20 65 20 28 18 0                               100 0 1 Mean 20         12 48 10 70 25 47 75 25 40 48 0                                                     Exp. 30 23 40                                                                4 74 16 22 68 22 28 18 0                               200 0 1 Mean 15         12 62 15 85 40 50 70 42 48 52 20                                                                                             Exp. 36 28 48 20 77 28 28          77 32 28 18 0                                                                     50 0 2 Mean 15 12 70 18 88 42 60 82 40 65 72 10                                                           Exp. 30 25 58  8 82 38 50 88 40 55 55 0                   100 0 2 Mean 20 12 70 15 85 50 70 98 48 60 80 0                               Exp. 25 25 64 10 83 41 52 89 41 55 55 0                                      200 0 2 Mean 10 10 78 20 90 55 78 100  55 45 70 10                                                       Exp. 31 30 68 25 85 49 55 92 49 55 55 0                        50 0 4 Mean 18 18 88 18 90 58 78 100                                     62 88 88 0                    Exp. 32 23 72 10 92 55 57 100  42 78 70         10                                                                              100 0 4 Mean 15 12 92 18 90 65 88 100  80 80 88 20                                                         Exp. 28 23 76 12 93 57 58 100  43 78 70 10              200 0 4 Mean 12 12 90 20 92 70 95 100  80 90 95 40                                                   Exp. 34 28 79 26 93 63 61 100                             51 78 70 10                                                                   *Rates are expressed in g ai/ha for Compound 1, Compound 9 and Compound         10. Data are reported as percent control.                                       †"Exp." are expected responses calculated according to Colby, S. R       "Calculating Synergistic and Antagonistic Responses of Herbicide                Combinations," Weeds, 15(1), pp 20-22 (1967).                             

The following protocol was used for the test in Table F. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIc mixtures and Formula I and Formula IIi mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention ate not limited, however, to these species.

Test F Protocol

Zea mays (corn, maize) cult. `P3180` (ZEAMX-R), Zea mays cult. (corn, maize) `P3180IR` (a commercial variety resistant to inhibitors of acetolactate synthase) (ZEAMX-E), Glycine max (soybean) cult. `Williams 82` (GLXMA), Glycine max (soybean) cult. `W20` (a commercial variety resistant to inhibitors of acetolactate synthase) (GLXMA-W), Brachiaria plantaginea (BRAPL), Cassia obtusifolia (CASTO), Abutilon theophrasti (ABUTH) and Sida spinosa (SIDSP) were grown in a greenhouse to the following approximate heights and leaf stages in 10-cm square pots containing sterilized sandy loam soil:

    ______________________________________                                                         Application                                                    Species           Height (cm)                                                                              Leaf Stage                                         ______________________________________                                         Zea mays          14        3                                                  Glycine max       7         1 trifoliate                                       Brachiaria plantaginea                                                                           4         2-3                                                Cassia obtusifolia                                                                               4         1                                                  Abutilon theophrasti                                                                             5         2-4                                                Sida spinosa      2         1-2                                                ______________________________________                                    

Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent containing a surfactant, and spraying the treatments onto the plants using a stationary laboratory circulating belt sprayer calibrated to deliver 280 L/ha through a single nozzle. Compound 1 was applied at 50, 100 and 200 g ai/ha. Compound 5 was applied at 1, 2 and 4 g ai/ha. Compound 11 was applied at 1, 2, and 4 g ai/ha. Mixtures of Compound 1 at 50, 100 and 200 g ai/ha with Compound 5 at 1, 2 and 4 g ai/ha, and Compound 1 at 50, 100 and 200 g ai/ha with Compound 11 at 1, 2 and 4 g ai/ha were also applied. Individual treatments were replicated four times, with exception of Compound 1 at 200 g ai/ha and Compound 5 at 1 g ai/ha, which was replicated three times. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 14 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test F are shown in Table F, which lists the observed response of specific weeds to Compound 1, Compound 5 and Compound 11 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 5 and of Compound 1 and Compound 11, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 5 and of Compound 1 and Compound 11 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 5 and of Compound 1 and Compound 11. Different ratios of Compound 1 to Compound 5 and of Compound 1 to Compound 11, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                                      TABLE F*                                     __________________________________________________________________________     Effect of Compound 1, Compound 5 and Compound 11 as Active Ingredients         Alone and in Mixture                                                           CMPD                                                                               CMPD                                                                               CMPD                                                                   1   5   11     ZEAMX                                                                               ZEAMX-R                                                                              GOSHI                                                                              GOSHI-T                                                                             GLXMA                                                                               GLXMA-W                                                                              BRAPL                                                                              CASTO                                                                              ABUTH                                                                               SIDSP               __________________________________________________________________________     Alone                                                                           50 0   0   Mean                                                                              12   10    22  15    5    5     0   0   0    0                  100 0   0   Mean                                                                              15   10    12   8   12   15     0   0   0    0                  200 0   0   Mean                                                                              12   10    30  25   18   20     2   0   5   12                   0  1   0   Mean                                                                              10   10    65   0    0    0     5   0  50   20                   0  2   0   Mean                                                                              10   10    78   0    2    0     0   0  68   22                   0  4   0   Mean                                                                              10   10    88   0    0    0     0   0  72   40                   0  0   1   Mean                                                                              10   10    75   5    0    0    48  22  65   22                   0  0   2   Mean                                                                              22   10    100  5   10    8    60  78  90   38                   0  0   4   Mean                                                                              18   10    100 22    5    2    80  90  95   50                  Mixtures                                                                        50 1   0   Mean                                                                              10   10    80  20    8   10     0   0  60   25                              Exp.†                                                                      21   19    73  15    5    5     5   0  50   20                  100 1   0   Mean                                                                              12   10    80  20   12   10     0   0  62   45                              Exp.                                                                              24   19    69   8   12   15     5   0  50   20                  200 1   0   Mean                                                                              17   10    77  27   20   23     0   0  63   30                              Exp.                                                                              21   19    76  25   18   20     7   0  52   30                   50 2   0   Mean                                                                              10   10    92  10   12   12    22   2  75   45                              Exp.                                                                              21   19    83  15    7    5     0   0  68   22                  100 2   0   Mean                                                                              10   10    92  32   38   28    18   0  72   58                              Exp.                                                                              24   19    81   8   14   15     0   0  68   22                  200 2   0   Mean                                                                              18   12    88  32   38   30    35  10  70   50                              Exp.                                                                              21   19    85  25   20   20     2   0  70   31                   50 4   0   Mean                                                                              10   10    98  22   28   15    25   5  85   60                              Exp.                                                                              21   19    91  15    5    5     0   0  72   40                  100 4   0   Mean                                                                              10   10    98  35   45   32    48  15  92   60                              Exp.                                                                              24   19    89   8   12   15     0   0  72   40                  200 4   0   Mean                                                                              10   10    100 38   52   35    30   5  88   60                              Exp.                                                                              21   19    92  25   18   20     2   0  73   47                   50 0   1   Mean                                                                              10   10    80  20    0    0    60  60  82   38                              Exp.                                                                              21   19    80  19    5    5    48  22  65   22                  100 0   1   Mean                                                                              12   10    80  28   22   18    68  60  82   38                              Exp.                                                                              24   19    78  13   12   15    48  22  65   22                  200 0   1   Mean                                                                              18   10    92  32   12   15    80  75  82   38                              Exp.                                                                              21   19    82  29   18   20    49  22  67   31                   50 0   2   Mean                                                                              12   10    98  25    2    5    85  95  90   42                              Exp.                                                                              31   19    100 19   14   13    60  78  90   38                  100 0   2   Mean                                                                              12   10    98  32   18   20    85  88  90   38                              Exp.                                                                              34   19    100 13   21   22    60  78  90   38                  200 0   2   Mean                                                                              10   10    98  32   18   22    80  90  90   45                              Exp.                                                                              31   19    100 29   26   26    61  78  90   45                   50 0   4   Mean                                                                              25   10    100 30   15   15    85  98  92   42                              Exp.                                                                              28   19    100 34   10    7    80  90  95   50                  100 0   4   Mean                                                                              25   10    100 32   15   18    92  92  100  52                              Exp.                                                                              30   19    100 28   16   17    80  90  95   50                  200 0   4   Mean                                                                              25   10    100 35   18   18    88  95  100  62                              Exp.                                                                              28   19    100 42   22   22    80  90  95   56                  __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1, Compound 5, and Compound       11. Data are reported as percent control.                                      †"Exp." are expected responses calculated according to Colby, S. R      "Calculating Synergistic and Antagonistic Responses of Herbicide               Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table G. Compound numbers are as described on page 28. The data demonstrate the efficacy of mixtures of Formula I, Formula IIg and IIi against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test G Protocol

Zea mays (corn, maize) cult. `P3180` (ZEAMX-R), Zea mays cult. (corn, maize) `P3180IR` (a commercial variety resistant to inhibitors of acetolactate synthase) (ZEAMX-E), Gossypium hirsutum (cotton) cult. `Coker 312` ((GOSHI), Gossypium hirsutum (cotton) cult. `Coker 312--Transgenic` (a line derived from Coker 312 by inclusion of a gene conferring resistance to inhibitors of acetolactate synthase) (GOSHI-T), Glycine max (soybean) cult. `Williams 82` (GLXMA), Glycine max (soybean) cult. `W20` (a commercial variety resistant to inhibitors of acetolactate synthase) (GLXMA-W), Brachiaria plantaginea (BRAPL), Echinochloa crus-galli (ECHCG) and Abutilon theophrasti (ABUTH) were grown in a greenhouse to the following approximate heights and leaf stages in 10-cm square pots containing sterilized sandy loam soil:

    ______________________________________                                                         Application                                                    Species           Height (cm)                                                                              Leaf Stage                                         ______________________________________                                         Zea mays          15        4                                                  Gossypium hirsutum                                                                               13        2                                                  Glycine max       10        1 trifoliate                                       Brachiaria plantaginea                                                                            8        3                                                  Echinochloa crus-galli                                                                           13        3                                                  Abutilon theophrasti                                                                              7        4                                                  ______________________________________                                    

Treatments were applied to the test species by diluting the formulated compounds in a non-phytotoxic solvent containing a surfactant, and spraying the treatments onto the plants using a stationary laboratory circulating belt sprayer calibrated to deliver 280 L/ha through a single nozzle. Compound 1 was applied at 50, 100 and 200 g ai/ha. Compound 5 and Compound 10 were applied in a 1:2 weight ratio totaling 1, 2 and 4 g ai/ha. Mixtures of Compound 1 at 50, 100 and 200 g ai/ha with a mixture of Compound 5 and Compound 10 in 1:2 weight ratio totaling 1, 2 and 4 g ai/ha were also applied. Individual treatments were replicated four times. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 14 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test G are shown in Table G, which lists the observed response of specific weeds to Compound 1 and the 1:2 mixture of Compound 5 and Compound 10 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 with the mixture of Compound 5 and Compound 10, and the expected additive effect of the herbicidal mixtures of Compound 1 with the mixture of Compound 5 and Compound 10 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 with Compound 5 and Compound 10. Different ratios of Compound 1 to Compound 5 to Compound 10, and different formulation types, also provide useful weed control from the combination of the three herbicides.

                                      TABLE G*                                     __________________________________________________________________________     Effect of Compound 1, Compound 5 and Compound 10                               as Active Ingredients Alone and in Mixture                                     CMPD                                                                               CMPD                                                                               CMPD                                                                   1   5   10      ZEAMX                                                                               ZEAMX-R                                                                              GOSHI                                                                               GOSHI-T                                                                             GLXMA                                                                               GLXMA-W                                                                              BRAPL                                                                               ECHCG                                                                               ABUTH                __________________________________________________________________________     Alone                                                                           50 0   0   Mean                                                                               0    0      0    0    0    0     0    0    0                   100 0   0   Mean                                                                               0    0      0    0    2    0     0    0    0                   200 0   0   Mean                                                                               0    0     12   10   10   10     2    2    5                    0  0.33                                                                               0.67                                                                               Mean                                                                               0    0     68    0   50    8    38   88   70                    0  0.67                                                                               1.33                                                                               Mean                                                                               0    0     75   12   68   18    60   92   90                    0  1.33                                                                               2.67                                                                               Mean                                                                               0    0     88   30   88   50    90   100  98                   Mixtures                                                                        50 0.33                                                                               0.67                                                                               Mean                                                                               0    0     78   10   52   18    50   92   90                               Exp.†                                                                       0    0     68    0   50    8    38   88   70                   100 0.33                                                                               0.67                                                                               Mean                                                                               0    0     80   22   48   22    58   95   88                               Exp.                                                                               0    0     68    0   51    8    38   88   70                   200 0.33                                                                               0.67                                                                               Mean                                                                               0    0     78   28   50   25    62   90   85                               Exp.                                                                               0    0     72   10   55   17    39   88   72                    50 0.67                                                                               1.33                                                                               Mean                                                                               0    0     82   30   75   45    82   100  90                               Exp.                                                                               0    0     75   12   68   18    60   92   90                   100 0.67                                                                               1.33                                                                               Mean                                                                               0    0     85   32   75   32    82   100  95                               Exp.                                                                               0    0     75   12   69   18    60   92   90                   200 0.67                                                                               1.33                                                                               Mean                                                                               0    0     82   38   82   42    90   98   100                              Exp.                                                                               0    0     78   21   71   26    61   92   90                    50 1.33                                                                               2.67                                                                               Mean                                                                               0    0     88   45   88   50    92   100  100                              Exp.                                                                               0    0     88   30   88   50    90   100  98                   100 1.33                                                                               2.67                                                                               Mean                                                                               0    0     88   50   88   55    95   100  98                               Exp.                                                                               0    0     88   30   88   50    90   100  98                   200 1.33                                                                               2.67                                                                               Mean                                                                               0    0     85   52   90   52    95   98   100                              Exp.                                                                               0    0     89   37   89   55    90   100  98                   __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1, Compound 5 and Compound        10. Data are reported as percent control.                                      †"Exp." are expected responses calculated according to Colby, S. R      "Calculating Synergistic and Antagonistic Responses of Herbicide               Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table H. Compound numbers are as described on page 28. The data demonstrate the efficacy of mixtures of Formula I, Formula IIc and IIf against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test H Protocol

Zea mays (Corn, maize) cult. `P3180` (ZEAMX-R), Zea mays cult. (corn, maize) `P3180IR` (a commercial variety resistant to inhibitors of acetolactate synthase) (ZEAMX-E), Gossypium hirsutum (cotton) cult. `Coker 312` (GOSHI), Gossypium hirsutum (cotton) cult. `Coker 312--Transgenic` (a line derived from Coker 312 by inclusion of a gene conferring resistance to inhibitors of acetolactate synthase) (GOSHI-T), Glycine max (soybean) cult. `Williams 82` (GLXMA), Glycine max (soybean) cult. `W20` (a commercial variety resistant to inhibitors of acetolactate synthase) (GLXMA-W), Brachiaria plantaginea (BRAPL) and Echinochloa crus-galli (ECHCG) were grown in a greenhouse to the following approximate heights and leaf stages in 10-cm square pots containing sterilized sandy loren soil:

    ______________________________________                                                         Application                                                    Species           Height (cm)                                                                              Leaf Stage                                         ______________________________________                                         Zea mays          18        3                                                  Gossypium hirsutum                                                                               15        2                                                  Glycine max       12        1 trifoliate                                       Brachiaria plantaginea                                                                            6        2                                                  Echinochloa crus-galli                                                                           14        3                                                  ______________________________________                                    

Treatments were applied to the test species by diluting the formulated compounds in a non-phytotoxic solvent containing a surfactant, and spraying the treatments onto the plants using a stationary laboratory circulating belt sprayer calibrated to deliver 280 L/ha through a single nozzle. Compound 1 was applied at 50, 100 and 200 g ai/ha. Compound 9 and Compound 11 were applied in a 1:1 weight ratio totaling 2 and 4 g ai/ha. Mixtures of Compound 1 at 50, 100 and 200 g ai/ha with a mixture of Compound 9 and Compound 11 in 1:1 weight ratio totaling 2 and 4 g ai/ha were also applied. Individual treatments were replicated four times. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 14 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test H are shown in Table H, which lists the observed response of specific weeds to Compound 1 as a single active ingredient and Compound 9 and Compound 11 mixed together without Compound 1, the observed responses of specific weeds to mixtures of Compound 1 with the mixture of Compound 9 and Compound 11, and the expected additive effect of the herbicidal mixtures of Compound 1 with the mixture of Compound 9 and Compound 11 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 with Compound 9 and Compound 11. Different ratios of Compound 1 to Compound 9 to Compound 11, and different formulation types, also provide useful weed control from the combination of the three herbicides.

                                      TABLE H*                                     __________________________________________________________________________     Effect of Compound 1, Compound 9 and Compound 11                               as Active Ingredients Alone and in Mixture                                     CMPD                                                                               CMPD                                                                               CMPD                                                                   1   9   11     ZEAMX                                                                               ZEAMX-R                                                                              GOSHI                                                                              GOSHI-T                                                                             GLXMA                                                                               GLXMA-W                                                                              BRAPL                                                                              ECHCG                        __________________________________________________________________________     Alone                                                                           50 0   0   Mean                                                                              0    0     12   5    2    0     0   0                           100 0   0   Mean                                                                              0    0     40  28   10   12     0   0                           200 0   0   Mean                                                                              0    0     50  30    5   10    15  10                            0  1   1   Mean                                                                              0    0     68   2    0    0    35  42                            0  2   2   Mean                                                                              0    0     82  10    2    2    55  88                           Mixtures                                                                        50 1   1   Mean                                                                              0    0     65  18    2    5    40  58                                       Exp.                                                                              0    0     72   7    2    0    35  42                           100 1   1   Mean                                                                              0    0     58  18    5    5    55  55                                       Exp.                                                                              0    0     81  29   10   12    35  42                           200 1   1   Mean                                                                              0    0     80  32    8   12    60  72                                       Exp.                                                                              0    0     84  31    5   10    45  48                            50 2   2   Mean                                                                              0    0     80  25    2    0    68  92                                       Exp.                                                                              0    0     84  14    4    2    55  88                           100 2   2   Mean                                                                              0    0     88  32   10    8    75  92                                       Exp.                                                                              0    0     89  35   12   14    55  88                           200 2   2   Mean                                                                              0    0     82  48    5   12    85  95                                       Exp.                                                                              0    0     91  37    7   12    62  89                           __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1, Compound 9 and Compound        11. Data are reported as percent control.                                      †"Exp." are expected responses calculated according to Colby, S. R      "Calculating Synergistic and Antagonistic Responses of Herbicide               Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table I. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIk mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test I Protocol

Beta vulgaris (BEAVA), Avena fatua (AVEFA), Lolium multiflorum (LOLMU), Apera spica-venti (APESV), Bromus tectorium (BROTE) and Sinapis arvensis (SINAR) were grown in a greenhouse to approximately the two-leaf stage in 15×20 cm rectangular fiber pots filled with a mixture of 60% sandy loam soil and 40% Metro-Mix 350™ growing medium. Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent, and spraying the treatments onto the plants. Compound 1 was applied at 8 and 16 g ai/ha. Compound 12 was applied at 16 g ai/ha. Mixtures of Compound 1 at 8 g ai/ha and Compound 12 at 16 g ai/ha, and Compound 1 at 16 g ai/ha and Compound 12 at 16 g ai/ha were also applied. After treatment, the plants were maintained in a greenhouse and were evaluated 14 days after spraying. All sprayed plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test I are shown in Table I, which lists the observed response of specific weeds to Compound 1 and Compound 12 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 12, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 12 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 12. Different ratios of Compound 1 to Compound 12, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                                      TABLE I*                                     __________________________________________________________________________     Effect of Compound 1 and Compound 12                                           as Active Ingredients Alone and in Mixture                                     CMPD 1                                                                              CMPD 12 BEAVA                                                                               SINAR                                                                              AVEFA                                                                              BROTE                                                                              LOLMU                                                                               APESV                                       __________________________________________________________________________     Alone                                                                          0    16   Obs.                                                                              0    90  55  35   0   65                                          8    0    Obs.†                                                                      0     0   0   0   0    0                                          16   0    Obs.                                                                              0     0   0   0   0   25                                          Mixtures                                                                       8    16   Obs.                                                                              25   95  60  50  60   70                                                    Exp.†                                                                      0    90  55  35   0   65                                          16   16   Obs.                                                                              0    100 60  55  50   80                                                    Exp.                                                                              0    90  55  35   0   74                                          __________________________________________________________________________      *Rates are expressed in g ai/ha for Compound 1 and Compound 12. Data are       reported as percent control.                                                   †"Obs." are the observed responses. "Exp." are expected responses       calculated according to Colby, S. R. "Calculating Synergistic and              Antagonistic Responses of Herbicide Combinations," Weeds, 15(1), pp 20-22      (1967).                                                                  

The following protocol was used for the test in Table J. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIn mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test J Protocol

Plastic pots were partially filled with silt loam soil. The soil was then flooded with water, and seeds of barnyardgrass (Echinochloa crus-galli) were planted in saturated soil, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 2 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table J are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test J are shown in Table J, which lists the mean response of a specific weed to Compound 1 and Compound 13 applied alone as single active ingredients, applied as a mixture of Compound 1 and Compound 13, and the expected additive effect of the herbicidal mixture of Compound 1 and Compound 13 (from Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 13. Different ratios of Compound 1 to Compound 13, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE J*                                                         ______________________________________                                         Effect of Compound 1 and Compound 13 as                                        Active Ingredients Alone and in Mixture                                        Compound  Compound      Barnyardgrass (2 L.S.)                                 1         13            Mean    Expected†                               ______________________________________                                         Alone                                                                          100         0           28      --                                             200         0           22      --                                             400         0           90      --                                              0         250          25      --                                              0         500          25      --                                              0        1000          42      --                                              0        2000          72      --                                              0        4000          62      --                                             Mixtures                                                                       100        250          72      46                                             200        250          80      42                                             400        250          95      92                                             100        500          88      46                                             200        500          88      42                                             400        500          95      92                                             100       1000          70      58                                             200       1000          80      55                                             400       1000          92      94                                             100       2000          85      80                                             200       2000          98      78                                             400       2000          100     97                                             100       4000          98      73                                             200       4000          98      70                                             400       4000          100     96                                             ______________________________________                                          *Application rates are expressed in g ai/ha for both Compound 1 and            Compound 13. Data are reported as percent control.                             †Colby, S. R. "Calculating Synergistic and Antagonistic Responses       of Herbicide Combinations," Weeds, 15(1); pp 20-22 (1967).               

The following protocol was used for the test in Table K. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIn mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test K Protocol

Plastic pots were partially filled with silt loam soil. The soil was then flooded with water, and seeds of a biotype of barnyardgrass (Echinochloa crus-galli) resistant to the compound of Formula IIn were planted in saturated soil, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 2 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table K are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test K are shown in Table K, which lists the mean response of a specific weed to Compound 1 and Compound 13 applied alone as single active ingredients, applied as a mixture of Compound 1 and Compound 13, and the expected additive effect of the herbicidal mixture of Compound 1 and Compound 13 (from Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 13. Different ratios of Compound 1 to Compound 13, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE K*                                                         ______________________________________                                         Effect of Compound 1 and Compound 13 as                                        Active Ingredients Alone and in Mixture                                                                Resistant Barnyardgrass                                Compound  Compound      (2 L.S.)                                               1         13            Mean    Expected†                               ______________________________________                                         Alone                                                                          25        0             0       --                                             50        0             0       --                                             100       0             18      --                                             200       0             60      --                                             400       0             70      --                                             0         250           12      --                                             0         500           8       --                                             0         1000          20      --                                             0         2000          22      --                                             0         4000          38      --                                             Mixtures                                                                       25        250           15      12                                             50        250           25      12                                             100       250           50      28                                             400       250           88      74                                             25        500           28      8                                              50        500           30      8                                              100       500           30      25                                             200       500           68      63                                             400       500           82      72                                             50        1000          22      20                                             400       1000          96      76                                             25        2000          50      22                                             50        2000          48      22                                             100       2000          50      36                                             400       2000          96      77                                             25        4000          50      38                                             50        4000          52      38                                             100       4000          68      49                                             200       4000          96      75                                             400       4000          100     81                                             ______________________________________                                          *Application rates are expressed in g ai/ha for both Compound 1 and            Compound 13. Data are reported as percent control.                             †Colby, S. R. "Calculating Synergistic and Antagonistic Responses       of Herbicide Combinations," Weeds, 15(1); pp 20-22 (1967).               

The following protocol was used for the test in Table L. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIb mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test L Protocol

Plastic pots were partially filled with silt loam soil, and seed of ducksalad (Heteranthera limosa) were added interspersed in soil to form a 1-cm-thick top layer. The soil was then flooded with water, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 3 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table L are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test L are shown in Table L, which lists the mean response of a specific weed to Compound 1 and Compound 3 applied alone as single active ingredients, applied as a mixture of Compound 1 and Compound 3, and the expected additive effect of the herbicidal mixture of Compound 1 and Compound 3 (from Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 3. Different ratios of Compound 1 to Compound 3, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE L*                                                         ______________________________________                                         Effect of Compound 1 and Compound 3 as                                         Active Ingredients Alone and in Mixture                                        Compound  Compound      Ducksalad (2 L.S.)                                     1         3             Mean    Expected†                               ______________________________________                                         Alone                                                                          25        0             10      --                                             50        0             20      --                                             75        0             0       --                                             0         0.5           28      --                                             0         1             88      --                                             0         2             90      --                                             0         3             95      --                                             0         4             100     --                                             Mixtures                                                                       25        0.5           55      35                                             25        1             95      89                                             25        2             92      91                                             25        3             98      96                                             25        4             98      100                                            50        0.5           70      42                                             50        1             90      90                                             50        2             98      92                                             50        3             100     96                                             50        4             100     100                                            75        0.5           85      28                                             75        1             98      88                                             75        2             100     90                                             75        3             100     95                                             75        4             100     100                                            ______________________________________                                          *Application rates are expressed in g ai/ha for both Compound 1 and            Compound 3. Data are reported as percent control.                              †Colby, S. R. "Calculating Synergistic and Antagonistic Responses       of Herbicide Combinations," Weeds, 15(1); pp 20-22 (1967).               

The following protocol was used for the test in Table M. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIh mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test M Protocol

10-cm square plastic pots were partially filled with sandy loam soil and planted with seeds of barnyardgrass (Echinochloa crus-galli) and wild mustard (Sinapis arvensis), which were covered with 0.5 cm of soil. Treatments were applied by diluting the compounds in a non-phytotoxic solvent containing a surfactant and then spraying the treatments onto the soil surface using a stationary laboratory circulating belt sprayer calibrated to deliver 327 L/ha through a single nozzle. Compound 1 was applied at 64 and 125 g ai/ha. Compound 14 was applied at 0.25, 0.5, 1, 2, 4, 8 and 16 g ai/ha. Mixtures of Compound 1 at 64 and 125 g ai/ha and Compound 14 at 0.25, 0.5, 1, 2, 4, 8 and 16 g ai/ha were also applied. Individual treatments were replicated three times. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 26 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test M are shown in Table M, which lists the observed response of specific weeds to Compound 1 and Compound 14 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 14, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 14 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 14. Different ratios of Compound 1 to Compound 14, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE M*                                                         ______________________________________                                         Effect of Compound 1 and Compound 14                                           as Active Ingredients Alone and in Mixture                                     Compound                                                                               Compound  Barnyardgrass                                                                               Wild Mustard                                    1       14        Mean    Expected†                                                                      Mean   Expected                               ______________________________________                                         Alone                                                                          64      0         3       --     23     --                                     125     0         62      --     38     --                                     0       0.25      7       --     83     --                                     0       0.5       12      --     95     --                                     0       1         67      --     98     --                                     0       2         92      --     95     --                                     0       4         92      --     99     --                                     0       8         99      --     99     --                                     0       16        100     --     100    --                                     Mixtures                                                                       64      0.25      35      10     95     87                                     64      0.5       68      15     97     96                                     64      1         76      68     99     98                                     64      2         99      92     99     96                                     64      4         100     92     99     99                                     64      8         100     99     99     99                                     64      16        100     100    100    100                                    125     0.25      68      65     98     89                                     125     0.5       80      67     97     97                                     125     1         86      87     98     99                                     125     2         100     97     99     97                                     125     4         99      97     100    99                                     125     8         99      100    99     99                                     125     16        100     100    100    100                                    ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1 and Compound 14. Data are       reported as percent control.                                                   †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table N. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIo mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test N Protocol

10-cm square plastic pots were partially filled with sandy loam soil and then planted with seeds of guineagrass (Panicum maximum) and large crabgrass (Digitara sanguinalis), which were covered with 0.5 cm of soil. Treatments were applied by diluting the compounds in a non-phytotoxic solvent containing a surfactant and then spraying the treatments onto the soil surface using a stationary laboratory circulating belt sprayer calibrated to deliver 327 L/ha through a single nozzle. Compound 1 was applied at 64, 125 and 250 g ai/ha. Compound 15 was applied at 16, 32, 64 and 125 g ai/ha. Mixtures of Compound 1 at 64, 125 and 250 g ai/ha and Compound 15 at 16, 32, 64 and 125 g ai/ha were also applied. Individual treatments were replicated three times. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 22 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test N are shown in Table N, which lists the observed response of specific weeds to Compound 1 and Compound 15 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 15, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 15 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 15. Different ratios of Compound 1 to Compound 15, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE N*                                                         ______________________________________                                         Effect of Compound 1 and Compound 15                                           as Active Ingredients Alone and in Mixture                                     Compound                                                                               Compound  Guineagrass  Large Crabgrass                                 1       15        Mean    Expected†                                                                      Mean   Expected                               ______________________________________                                         Alone                                                                          64      0         30      --     2      --                                     125     0         60      --     80     --                                     250     0         98      --     96     --                                     0       16        0       --     15     --                                     0       32        0       --     74     --                                     0       64        39      --     96     --                                     0       125       85      --     98     --                                     Mixtures                                                                       64      16        52      30     42     17                                     64      32        38      30     76     75                                     64      64        80      57     100    96                                     64      125       95      90     100    98                                     125     16        86      60     84     83                                     125     32        81      60     100    95                                     125     64        94      76     100    99                                     125     125       98      94     100    100                                    250     16        86      98     99     97                                     250     32        94      98     100    99                                     250     64        100     99     100    100                                    250     125       100     100    100    100                                    ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1 and Compound 15. Data are       reported as percent control.                                                   †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used in Table O. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIo mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test O Protocol

Barnyardgrass (Echinochloa crus-galli) and johnsongrass (Sorghum halepense) were grown in a greenhouse to the following approximate heights and leaf stages in 10-cm square pots fixed with a mixture of 60% sandy loam soil and 40% MetroMix 350™ growing medium:

    ______________________________________                                                        Application                                                     Species          Height (cm)                                                                              Leaf Stage                                          ______________________________________                                         Echinochloa crus-galli                                                                          9         2                                                   Sorghum halepense                                                                               10        2                                                   ______________________________________                                    

Treatments were applied to the test species by diluting the compounds in a non-phytotoxic solvent containing a surfactant, and spraying the treatments onto the plants using a stationary laboratory circulating belt sprayer calibrated to deliver 327 L/ha through a single nozzle. Compound 1 was applied at 125, 250 and 500 g ai/ha. Compound 14 was applied at 16, 32, 64 and 125 g ai/ha. Mixtures of Compound 1 at 125, 250 and 500 g ai/ha and Compound 14 at 16, 32, 64 and 125 g ai/ha were also applied. Individual treatments were replicated four times. Treatments were positioned in a greenhouse in a randomized complete block design. The greenhouse was maintained at a 28° C. average daily temperature, and natural light in the greenhouse was supplemented with artificial light to achieve a photoperiod of 14 hours. At 16 days after spraying, the plants were evaluated for injury as compared to control plants that were sprayed only with non-phytotoxic solvent. Injury was evaluated visually using a 0 to 100% scale where 0 indicates no effect and 100 indicates complete control.

Results of Test O are shown in Table O, which lists the observed response of specific weeds to Compound 1 and Compound 15 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 15, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound. 15 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 15. Different ratios of Compound 1 to Compound 15, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE O*                                                         ______________________________________                                         Effect of Compound 1 and Compound 15                                           as Active Ingredients Alone and in Mixture                                     Compound                                                                               Compound  Barnyardgrass                                                                               Johnsongrass                                    1       15        Mean    Expected†                                                                      Mean   Expected                               ______________________________________                                         Alone                                                                          125     0         48      --     0      --                                     250     0         70      --     0      --                                     500     0         78      --     31     --                                     0       16        2       --     0      --                                     0       32        2       --     0      --                                     0       64        11      --     0      --                                     0       125       59      --     56     --                                     Mixtures                                                                       125     16        60      49     2      0                                      125     32        75      49     0      0                                      125     64        81      54     8      0                                      125     125       95      79     39     56                                     250     16        81      71     9      0                                      250     32        79      71     21     0                                      250     64        90      73     49     0                                      250     125       96      88     54     56                                     500     16        80      78     30     31                                     500     32        80      78     55     31                                     500     64        88      80     84     31                                     500     125       100     91     81     70                                     ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1 and Compound 15. Data are       reported as percent control.                                                   †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table P. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIa mixtures of this invention against specific weeds. The weed control afforded by the mixtures of this invention are not limited, however, to these species.

Test P Protocol

Plastic pots were partially filled with silt loam soil, and seeds of Cyperus difformis and Cyperus iria were added interspersed in soil to form a 1-cm-thick top layer. The soil was then flooded with water, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 3 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table P are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test P are shown in Table P, which lists the observed response of specific weeds to Compound 1 and Compound 2 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 2, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 2 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 2. Different ratios of Compound 1 to Compound 2, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE P*                                                         ______________________________________                                         Effect of Compound 1 and Compound 2                                            as Active Ingredients Alone and in Mixture                                     Compound                                                                               Compound  Cyperus difformis                                                                           Cyperus iria                                    1       2         Mean    Expected†                                                                      Mean   Expected                               ______________________________________                                         Alone                                                                          25      0         45      --     18     --                                      0      0.5       0       --     63     --                                      0      1.0       70      --     75     --                                     Mixtures                                                                       25      0.5       70      45     85     74                                     25      1.0       90      84     85     80                                     ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1 and Compound 2. Data are        reported as percent control.                                                   †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table Q. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I and Formula IIc mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test O Protocol

Plastic pots were partially filled with silt loam soil, and seeds of Cyperus iria were added interspersed in soil to form a 1-cm-thick top layer. The soil was then flooded with water, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 3 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table Q are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test Q are shown in Table Q, which lists the observed response of a specific weed to Compound 1 and Compound 11 applied alone as single active ingredients, the observed responses of specific weeds to mixtures of Compound 1 and Compound 11, and the expected additive effect of the herbicidal mixtures of Compound 1 and Compound 11 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 and Compound 11. Different ratios of Compound 1 to Compound 11, and different formulation types, also provide useful weed control from the combination of the two herbicides.

                  TABLE Q*                                                         ______________________________________                                         Effect of Compound 1 and Compound 11 as                                        Active Ingredients Alone and in Mixture                                        Compound  Compound      Cyperus iria                                           1         11            Mean    Expected†                               ______________________________________                                         Alone                                                                          50        0             25      --                                             75        0             55      --                                              0        0.25          0       --                                              0        0.50          0       --                                              0        0.75          20      --                                              0        1.0           60      --                                             Mixtures                                                                       50        0.25          45      25                                             50        0.50          60      25                                             50        0.75          75      40                                             50        1.00          90      70                                             75        0.25          92      55                                             75        0.50          100     55                                             75        0.75          92      64                                             75        1.00          85      82                                             ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1 and Compound 11. Data are       reported as percent control.                                                   †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table R. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I, Formula IIb and Formula IIc mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test R Protocol

Plastic pots were partially filled with silt loam soil, and seeds of ducksalad (Heteranthera limosa) were added interspersed in soil to form a 1-cm-thick top layer. The soil was then flooded with water, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 3 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table R are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test R are shown in Table R, which lists the observed response of a specific weed to Compound 1 as a single active ingredient and Compound 3 and Compound 11 mixed together without Compound 1, the observed responses of specific weeds to mixtures of Compound 1 with the mixture of Compound 3 and Compound 11, and the expected additive effect of the herbicidal mixtures of Compound 1 with the mixture of Compound 3 and Compound 11 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 with Compound 3 and Compound 11. Different ratios of Compound 1 to Compound 3 to Compound 11, and different formulation types, also provide useful weed control from the combination of the three herbicides.

                  TABLE R*                                                         ______________________________________                                         Effect of Compound 1, Compound 3 and Compound 11                               as Active Ingredients Alone and in Mixture                                     Compound                                                                               Compound    Compound  Ducksalad                                        1       3           11        Mean  Expected†                           ______________________________________                                         75      0           0         0     --                                         0       0.125       0.125     0     --                                         0       0.25        0.25      10    --                                         0       0.375       0.375     50    --                                         0       0.50        0.50      95    --                                         0       1.00        1.00      100   --                                         Mixtures with Compound 1                                                       75      0.125       0.125     18    0                                          75      0.25        0.25      35    10                                         75      0.375       0.375     86    50                                         75      0.50        0.50      100   95                                         75      1.00        1.00      100   100                                        ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1, Compound 3 and Compound        11. Data are reported as percent control.                                      †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table S. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I, Formula IIb and Formula IId mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test S Protocol

Plastic pots were partially filled with silt loam soil, and seeds of ducksalad (Heteranthera limosa) were added interspersed in soil to form a 1-cm-thick top layer. The soil was then flooded with water, and the plants grown to the 2-leaf stage for testing. At treatment time, the water level for all plantings was raised to 3 cm above the soil surface. Chemical treatments were formulated in a non-phytotoxic solvent mixture containing a surfactant and applied directly to the paddy water. These treatments were replicated twice. Treated plants and controls were maintained in a greenhouse for 21 days, after which time all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table S are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control.

Results of Test S are shown in Table S, which lists the observed response of a specific weed to Compound 1 as a single active ingredient and Compound 3 and Compound 16 mixed together without Compound 1, the observed responses of specific weeds to mixtures of Compound 1 with the mixture of Compound 3 and Compound 16, and the expected additive effect of the herbicidal mixtures of Compound 1 with the mixture of Compound 3 and Compound 16 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 with Compound 3 and Compound 16. Different ratios of Compound 1 to Compound 3 to Compound 16, and different formulation types, also provide useful weed control from the combination of the three herbicides.

                  TABLE S*                                                         ______________________________________                                         Effect of Compound 1, Compound 3 and Compound 16                               as Active Ingredients Alone and in Mixture                                     Compound Compound   Compound   Ducksalad                                       1        3          16         Mean  Expected†                          ______________________________________                                         50       0          0           0    --                                        75       0          0           0    --                                         0       0.17       0.83       20    --                                         0       0.33       1.67       70    --                                         0       0.50       2.50       95    --                                         0       0.67       3.33       100   --                                        Mixtures with Compound 1                                                       50       0.17       0.83       25    20                                        50       0.33       1.67       82    70                                        50       0.50       2.50       95    95                                        50       0.67       3.33       100   100                                       75       0.17       0.83       55    20                                        75       0.33       1.67       82    70                                        75       0.50       2.50       100   95                                        75       0.67       3.33       100   100                                       ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1, Compound 3 and Compound        16. Data are reported as percent control.                                      †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                            

The following protocol was used for the test in Table T. Compound numbers are as described on page 28. The data demonstrate the efficacy of the Formula I, Formula IIb and Formula IId mixtures of this invention against a specific weed. The weed control afforded by the mixtures of this invention are not limited, however, to this species.

Test T Protocol

Herbicides were applied to weeds and transplanted rice in outdoor flooded field plots measuring 3-by-5 meters at an application timing of 5 days after transplanting 21-day-old Indica IR64 rice seedlings. At the time of application, Monochoria vaginalis was in the early preemergence stage of growth. Water depth at application was 4-6 cm and was maintained on the plots for at least 2 weeks after treatment. Compound 1 was formulated as a 30% emulsifiable concentrate, and the 1:5 mixture of Compound 3 and Compound 16 was formulated as a 10% wettable powder. The herbicides were applied using a knapsack sprayer with a single fan nozzle delivering a spray volume of 300 liters/ha. At 28 days after application, weed control was calculated quantitatively on a 0 to 100 percent scale, where 0 is no effect and 100 is complete control, by comparing weed density in treated versus untreated plots. Each table entry is a mean of three replications.

Results of Test T are shown in Table T, which lists the observed response of a specific weed to Compound 1 as a single active ingredient and Compound 3 and Compound 16 mixed together without Compound 1, the observed responses of specific weeds to mixtures of Compound 1 with the mixture of Compound 3 and Compound 16, and the expected additive effect of the herbicidal mixtures of Compound 1 with the mixture of Compound 3 and Compound 16 (Colby's equation). Weeds other than those specifically listed are also controlled by mixtures of Compound 1 with Compound 3 and Compound 16. Different ratios of Compound 1 to Compound 3 to Compound 16, and different formulation types, also provide useful weed control from the combination of the three herbicides.

                  TABLE T*                                                         ______________________________________                                         Effect of Compound 1 Compound 3 and Compound 16                                as Active Ingredients Alone and in Mixture                                     Compound Compound   Compound   Monochoria vaginalis                            1        3          16         Mean  Expected†                          ______________________________________                                         200      0          0          16    --                                        300      0          0          34    --                                         0       0.67       3.33       26    --                                         0       1.33       6.67       74                                               0       2.50       12.50      100                                             Mixtures with Compound 1                                                       200      0.67       3.33       88    38                                        200      1.33       6.67       95    78                                        200      2.50       12.50      100   100                                       300      0.67       3.33       80    51                                        300      1.33       6.67       98    83                                        300      2.50       12.50      100   100                                       ______________________________________                                          *Rates are expressed in g ai/ha for Compound 1, Compound 3 and Compound        16. Data are reported as percent control.                                      †"Expected" are expected responses calculated according to Colby,       S. R. "Calculating Synergistic and Antagonistic Responses of Herbicide         Combinations," Weeds, 15(1), pp 20-22 (1967).                             

What is claimed is:
 1. A herbicidally effective mixture of anilofos (Formula I) with propanil (Formula IIn).
 2. An agriculturally suitable composition for controlling the growth of undesired vegetation comprising an effective amount of the mixture of claim 1 and at least one of the following: surfactant, solid or liquid diluent.
 3. A method for controlling the growth of undesired vegetation by applying to the locus of the undesired vegetation a herbicidally effective amount of the mixture of claim
 1. 4. A method for controlling the growth of undesired vegetation by applying to the locus of the undesired vegetation a herbicidally effective amount of the mixture of claim
 1. 